1. The graph in the figure shows the position of an object as a function of...
St.A balis thrown directy upward and experiences no air resistance. Which one of the following statements about its motion is correct? a. The velocity of the ball is downward while it is traveling up and upward while it is traveling down. b. The velocity of the ball is upward while it is traveling up and downward while it is traveling down but is zero at the highest point when the ball stops. c. The velocity of the ball is downward...
An object moving in the *x direction experience an acceleration of *2.0 m/s^2- This mean the object is increasing its velocity by 2.0 m/s every second. travels 2.0 m In every second. is traveling at 2.0 m/s. is decreasing its velocity by 2.0 m/s every second. Suppose that an object is moving with a constant velocity. Which statement concerning Its acceleration must be correct? The acceleration is constantly increasing. The acceleration is a constant non-zero value. The acceleration is constantly...
Answer in units of m/s. Fo tic av 012 10.0 points An object is thrown vertically up and attains an upward velocity of 50 m/s when it reaches one fourth of its maximum height above its launch point. What was the initial speed of the object? The acceleration of gravity is 9.8 m/s. Answer in units of m/s 013 10.0 points A rock is thrown downward from an unknown height above the ground with an initial speed of 13 m/s....
A person is initially driving a car east down a straight road. The magnitude of the instantaneous acceleration remains constant with time, and the direction of the acceleration is always to the west. The speed of the car is O decreasing but then increasing O increasing O increasing but then decreasing O constant. O decreasing. While standing at the edge of the roof of a building, you throw a stone upward with an initial speed 7.39 m/s. The stone subsequently...
If a heavy object like a bowling ball is thrown straight up through a moon roof in a car traveling down a straight highway with the cruise control on at 60 mi/hr, what will happen? (Neglect air resistance.) A. The ball will hit the windshield of the car B. The ball will come back down through the moon roof of the car. C. The ball will hit the trunk of the car D. The ball will hit the pavement behind...
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...
You MUST show all the steps you take to solve the problem: the formulas, calculations, results and units to receive the whole credit for each problem. You must show vectors to receive credits. You are driving down the highway late one night at 20m/s when a deer steps onto the road 35 m in front of you. Your reaction time before stepping on the brakes is 0.50 s, and the maximum deceleration of your car is 10m/s2 . How much...
Please help me 2. A baseball is thrown straight up with an initial speed of 14.7 m/s from the roof of a building Hp 111.5 m high. (Use the coordinate system shown at the right. Assume the baseball is thrown upward from the edge of the roof, so that it can travel back down to the ground without colliding with the roof. Ignore air resistance. Be sure to include the correct sign and units with any numerical answer. Use g...
if you could show your work with the formulas, that would be much appreciated. Question 5 (3 points) A small car starts from rest at time t - O and moves along a straight track at a constant acceleration of 0.6 m/s2. At what time does the car cover a displacement of 250 m? 3.5 s 7.0 s 14 s 29 s 58 s Question 8 (1 point) A rock is dropped from rest from the window edge of a...
9). A small bag of sand is released from an ascending hot‑air balloon whose constant, upward velocity is ?0=2.75 m/s. Knowing that at the time of the release the balloon was 58.3 m above the ground, determine the time ? it takes for the bag to reach the ground from the moment of its release. Use ?=9.81 m/s2. r= 10) You throw a baseball directly upward at time ?=0 at an initial speed of 14.1 m/s. What is the maximum height...