Homework Answers
The brick is in free-fall and so it is constant acceleration with a = g = 9.8 m/s2.
Since it is falling downwards, its vertical component of velocity will be negative and it will increase linearly with time.
Therefore, vy vs t graph will be a straight line with positive slope m = 9.8 m/s2 as long as v is expressed as negative (which is the case in the above graph).
y vs t graph will be a parabola since its slope dy/dt = vy itself is changing with time.
Time taken to reach the ground = 1.9s
so, the height from which the brick is dropped is: h = ut + (1/2)gt2 = 0 + (1/2)(9.8)(1.9)2 = 17.68 m.
(Dx?-lay,-ay,]s+(A%-ay,]s+[a,v,-ay,]s) 1. Calculate the curls of: Show transcribed image text
(Dx?-lay,-ay,]s+(A%-ay,]s+[a,v,-ay,]s) 1. Calculate the curls of:
A stone is dropped from the roof of a building; 1.90 s after that, a second...
A stone is dropped from the roof of a building; 1.90 s after that, a second stone is thrown straight down with an initial speed of 27.0 m/s , and the two stones land at the same time. A) How long did it take the first stone to reach the ground? B) How high is the building? c) What are the speeds of the two stones just before they hit the ground? Enter your answers numerically separated by a comma.
A stone is dropped from the roof of a building; 1.90 s after that, a second...
A stone is dropped from the roof of a building; 1.90 s after that, a second stone is thrown straight down with an initial speed of 27.0 m/s , and the two stones land at the same time. A) How long did it take the first stone to reach the ground? B) How high is the building? c) What are the speeds of the two stones just before they hit the ground? Enter your answers numerically separated by a comma.
A certain freely falling object, released from rest, requires 1.90 s to travel the last 36.0...
A certain freely falling object, released from rest, requires 1.90 s to travel the last 36.0 m before it hilts the ground. (a) Find the velocity of the object s 36.0 m above the ground. (Indicate the direction with the sign of your answer. Let the positive direction be upward.) The response you submitted has the wrong sign. m/s ind the total distance the object travel's during the fall. difflers significantly from the correct answer. Rework your solution from the...
a ball is kicked off the ground with a speed of 10m/s at an angel of...
a ball is kicked off the ground with a speed of 10m/s at an angel of 30* above horizontal. it lands on 3m net. find kinematic info xi,yi xf, yf vix viy vfx vif ax ay t
Conceptual Questions and Exercises 75 You get into an elevator in the lobby on the ground...
Conceptual Questions and Exercises 75 You get into an elevator in the lobby on the ground floor and hit the button for the 10th floor. What is the dired- tion of your acceleration right after the elevator starts moving and right before it stops at the 10th floor? 22.
1) . A passenger on a moving train walks at a speed of 1.90 m/s due...
1) . A passenger on a moving train walks at a speed of 1.90 m/s due north relative to the train. The passenger's speed with respect to the ground is 4.5 m/s at an angle of 31.0° west of north. What are the magnitude and direction of the velocity of the train relative to the ground? 2) A ship sets sail from Rotterdam, The Netherlands, heading due north at 8.00 m/s relative to the water. The local ocean current is...
You are in your favorite elevator, coming to a stop as you go from the ground...
You are in your favorite elevator, coming to a stop as you go from the ground floor to the 4th floor. a) What forces are acting on you as you are coming to a stop in the elevator? Normal force upward and Force of gravity upward Normal force downward and Force of gravity upward Normal force downward and Force of gravity downward Normal force upward and Force of gravity downward Just the Force of gravity downward b) As you are...
A 1.90 kg solid, uniform ball of radius 0.200 m is released from rest at point...
A 1.90 kg solid, uniform ball of radius 0.200 m is released from
rest at point A in the figure below, its center of gravity a
distance of 1.90 m above the ground. The ball rolls without
slipping to the bottom of an incline and back up to point B where
it is launched vertically into the air. The ball then rises to its
maximum height hmax at point C.
a) At point B, find the ball's translational speed
vB...
A 1.90 kg solid, uniform ball of radius 0.200 m is released from rest at point...
A 1.90 kg solid, uniform ball of radius 0.200 m is released from
rest at point A in the figure below, its center of gravity a
distance of 1.90 m above the ground. The ball rolls without
slipping to the bottom of an incline and back up to point B where
it is launched vertically into the air. The ball then rises to its
maximum height hmax at point C.
a) At point B, find the ball's translational speed
vB...
(Dx?-lay,-ay,]s+(A%-ay,]s+[a,v,-ay,]s) 1. Calculate the curls of:
A certain freely falling object, released from rest, requires 1.90 s to travel the last 36.0 m before it hilts the ground. (a) Find the velocity of the object s 36.0 m above the ground. (Indicate the direction with the sign of your answer. Let the positive direction be upward.) The response you submitted has the wrong sign. m/s ind the total distance the object travel's during the fall. difflers significantly from the correct answer. Rework your solution from the...
Conceptual Questions and Exercises 75 You get into an elevator in the lobby on the ground floor and hit the button for the 10th floor. What is the dired- tion of your acceleration right after the elevator starts moving and right before it stops at the 10th floor? 22.
A 1.90 kg solid, uniform ball of radius 0.200 m is released from
rest at point A in the figure below, its center of gravity a
distance of 1.90 m above the ground. The ball rolls without
slipping to the bottom of an incline and back up to point B where
it is launched vertically into the air. The ball then rises to its
maximum height hmax at point C.
a) At point B, find the ball's translational speed
vB...
A 1.90 kg solid, uniform ball of radius 0.200 m is released from
rest at point A in the figure below, its center of gravity a
distance of 1.90 m above the ground. The ball rolls without
slipping to the bottom of an incline and back up to point B where
it is launched vertically into the air. The ball then rises to its
maximum height hmax at point C.
a) At point B, find the ball's translational speed
vB...
Most questions answered within 3 hours.
-
In a certain state, about 65% of drivers who are arrested for
driving while intoxicated (DWI)...
asked 1 minute from now -
A single NEC SX-9 vector processor unit (VPU) has a peak
arithmetic
performance of 102.4 GFs/s....
asked 16 minutes ago -
. Determine the hourly multiplication factors
such that the total daily water consumption will equal 15,000...
asked 17 minutes ago -
A budgeting Web site reported that 35% of U.S. households have
withdrawn money from a 401(k)...
asked 16 minutes ago -
In this assignment, you will write a minimum two-page paper that
explains the treatment of internal...
asked 20 minutes ago -
Direct marketing is also referred to as Question 50 options: 1)
one-to-one marketing. 2) business-customer marketing....
asked 23 minutes ago -
INK Ltd is grocery retailer with 103 shops around South
Australia and Tasmania. The company has...
asked 28 minutes ago -
HOW BEER IS MADE
The beer making process is an art. It takes time, patience and...
asked 29 minutes ago -
What two methods could be used to purify the dimethyl
fumarate?
Based on the 12 Principles...
asked 39 minutes ago -
Reflect upon the readings and videos as well as our Media Monday
discussion. Integrating concepts from...
asked 44 minutes ago -
1. A cylindrical capacitor with A = 0.01, B = 0.1 and a length
of 5...
asked 50 minutes ago -
Explain how taking an SGLT-2 inhibitor, along with taking
insulin leads to ketoacidosis in people who...
asked 59 minutes ago