Homework Answers
3)
initial velocity=v=-30m/s( upwards)
initial height=20 cm
velocity =v+gt=-30+gt
distance =S=20+vt+0.5gt^2=20-30t+4.9t^2
(b)velocity after hitting ground=v=sqrt(900+2*9.8*20)=35.9 m.s
(c) velocity after bounce=8.98
height=v^2/2g=4.11 m
Add Answer to:
A ball is tossed straight upwards with an initial velocity of .30.00 metres per second from...
Part 1 A ball is tossed so that it bounces off the ground, rises to a...
Part 1 A ball is tossed so that it bounces off the ground, rises to a height of 2.30 m, and then hits the ground again 1.70 m away from the first bounce. 1. How long is the ball in the air between the two bounces? 1.375 2. What is the ball's velocity in the x-direction? 3. What is the ball's speed just before the second bounce? 4. What is the angle of the velocity vector with respect to the...
A ball is thrown vertically upwards with an initial velocity of 18.80 m/s, from the ground....
A ball is thrown vertically upwards with an initial velocity of 18.80 m/s, from the ground. How long is the ball in the air? (Neglect air resistance.) What is the greatest height reached by the ball? Calculate the time at which the ascending ball reaches a height of 12.8 m above the ground. A rocket, initially at rest on the ground, accelerates straight upward with a constant acceleration of 53.0 m/s^2, until the fuel is used up after 6.80s. What...
A 0.2 Kg ball is dropped with no initial velocity from a height of 6 m....
A 0.2 Kg ball is dropped with no initial velocity from a height of 6 m. It drops vertically with no air drag, it hits the flat, concrete ground and re-bounces upward in a vertical direction reaching a maximum height of 4 m. (i) Calculate the speed of the ball when it hit the ground. (ii) Calculate the speed of the ball when it began moving upward. (iii) Calculate the magnitude of the impulse provided by the ground to the...
An free falling object is thrown upwards with an initial velocity of 20.4 metres per second....
An free falling object is thrown upwards with an initial velocity of 20.4 metres per second. How far up is it after a time of 3.1 seconds
(a) A ball is dropped from rest from an initial height h above the floor. It...
(a) A ball is dropped from rest from an initial height h above the floor. It then bounces several times. Draw graphs the position y(e), velocity v, (e) and acceleration ay () of the ball for two complete bounces (hitting the ground t for py Ct) ay (t) (b) If the ball is released from rest at a height h the ground? 1.50 m above the floor, how fast is the ball moving when it reach (c) If the ball...
PHY 2053 Test #1 2019-01-30 4. A ball is thrown straight upwards at an initial velocity,...
PHY 2053 Test #1 2019-01-30 4. A ball is thrown straight upwards at an initial velocity, to 8.75 f, from a h = 55.12 m. Ignoring air friction, find (a) How long does it take for the ball to reach max height? (b) What is the max height from the ground? (c) How long does it take for the ball to hit the ground? (d) At what ve locity is the ball traveling the instant before it strikes the ground?...
5. You throw a ball straight up from the ground level to a height of 10...
5. You throw a ball straight up from the ground level to a height of 10 ft. The ball falls down and hits the floor. It then bounces back to a height that is 8 ft and repeatedly bouncing up and down indefinitely, each time reaching a height four-fifths of the previous height. (a) When the ball hits the ground the first time, we call this the first hit. Find the height of the ball on the fifth hit. (b)...
A ball is launched from the ground at an angle of 65∘ above the horizontal with...
A ball is launched from the ground at an angle of 65∘ above the horizontal with a velocity of 22m/s. The ball hits the ground some distance away at a given speed, and bounces back up. When it does so the amplitude of both the x and y components of its velocity are half what they were. This repeats with the ball losing half of it’s speed on each bounce. a) Sketch the problem. [2 points b) Write the equation...
If a projectile is fired with an initial velocity of vo meters per second at an...
If a projectile is fired with an initial velocity of vo meters per second at an angle a above the horizontal and air resistance is assumed to be negligible, then its position after t seconds is given by the parametric equations x = (vo cos(a)t y = (vo sin(a)t - +- 1012 where g is the acceleration due to gravity (9.8 m/s2). (Round your answers to the nearest whole number.) (a) If a gun is fired with a = 30°...
1. If a projectile is fired with an initial velocity of vo meters per second at...
If a projectile is fired with an initial velocity of v0 meters per second at an angle α above the horizontal, and air resistance is assumed to be negligible, then its position after t seconds is given by the parametric equationsx=(v0 cos α) t y=(v0 sin α) t-1/2 g t2where g is the acceleration due to gravity (9.8 m / s2)(a) If a projectile is fired with α=45° and v0=900 m / s, when will it hit the ground? How...
Part 1 A ball is tossed so that it bounces off the ground, rises to a height of 2.30 m, and then hits the ground again 1.70 m away from the first bounce. 1. How long is the ball in the air between the two bounces? 1.375 2. What is the ball's velocity in the x-direction? 3. What is the ball's speed just before the second bounce? 4. What is the angle of the velocity vector with respect to the...
A ball is thrown vertically upwards with an initial velocity of 18.80 m/s, from the ground. How long is the ball in the air? (Neglect air resistance.) What is the greatest height reached by the ball? Calculate the time at which the ascending ball reaches a height of 12.8 m above the ground. A rocket, initially at rest on the ground, accelerates straight upward with a constant acceleration of 53.0 m/s^2, until the fuel is used up after 6.80s. What...
(a) A ball is dropped from rest from an initial height h above the floor. It then bounces several times. Draw graphs the position y(e), velocity v, (e) and acceleration ay () of the ball for two complete bounces (hitting the ground t for py Ct) ay (t) (b) If the ball is released from rest at a height h the ground? 1.50 m above the floor, how fast is the ball moving when it reach (c) If the ball...
PHY 2053 Test #1 2019-01-30 4. A ball is thrown straight upwards at an initial velocity, to 8.75 f, from a h = 55.12 m. Ignoring air friction, find (a) How long does it take for the ball to reach max height? (b) What is the max height from the ground? (c) How long does it take for the ball to hit the ground? (d) At what ve locity is the ball traveling the instant before it strikes the ground?...
5. You throw a ball straight up from the ground level to a height of 10 ft. The ball falls down and hits the floor. It then bounces back to a height that is 8 ft and repeatedly bouncing up and down indefinitely, each time reaching a height four-fifths of the previous height. (a) When the ball hits the ground the first time, we call this the first hit. Find the height of the ball on the fifth hit. (b)...
If a projectile is fired with an initial velocity of vo meters per second at an angle a above the horizontal and air resistance is assumed to be negligible, then its position after t seconds is given by the parametric equations x = (vo cos(a)t y = (vo sin(a)t - +- 1012 where g is the acceleration due to gravity (9.8 m/s2). (Round your answers to the nearest whole number.) (a) If a gun is fired with a = 30°...
Most questions answered within 3 hours.
-
how many mL of 0.1050 M NaOH is needed to reach a pH of 3.74
when...
asked 1 minute ago -
QUESTION
Memory retrieval that is easier when the person is in the same
psychological condition during...
asked 4 minutes ago -
Your client, Anita, is hurt in a car accident and comes to you
for some advice....
asked 5 minutes ago -
The mean annual inflation rate in the UNited States over the
past 98 years in 3.37%...
asked 11 minutes ago -
Design a class Holiday that represents a
holiday during the year. This class has three
private...
asked 29 minutes ago -
Problem 1 (Logistic Regression and KNN). In this problem, we
predict Direction using the data Weekly.csv....
asked 27 minutes ago -
What is the difference between VNTRs (Variable Number Tandem
Repeats) and STRs (Short Tandem Repeats) used...
asked 34 minutes ago -
Fill in
Isotope: 15 O
1. Element name:
2. Atomic number:
3. Mass number:
4. Number...
asked 33 minutes ago -
These days with the cost of a college education it is important
to be able to...
asked 41 minutes ago -
c++
Implement Radix Sort Most sorting algorithms, like bubble,
insertion, selection and shell follow similar implementations....
asked 49 minutes ago -
Many adult tissues contain terminally differentiated cells that
are incapable of proliferation. How can these tissues...
asked 49 minutes ago -
A survey of tobacco use in high schools tested the saliva of
female and male students...
asked 1 hour ago