A car has a velocity of 30m/s to the right. The driver applies the brakes, slowing the car to a stop over the next 5s. Which of the following is true of the car’s acceleration? *   The car is accelerating to the left. The car is accelerating to the right. The car is not accelerating. The car is accelerating centripetally.

Q2 : At t = 0 bullet A is fired vertically with an intial velocity of 450 m/s when t = 3 seconds. Bullet B is fired upward with a velocity of 600 m/s. Determine the time t after A is fired as to when bullet B passes bullet A

A ball is thrown up with an initial speed of 43.0 m/s a) what is the ball's speed at its highest position? b) how long does it take the ball to reach its highest position? c) what is the magnitude of the ball"s acceleration at its highest position? d) what is the distance between the initial and highest position of the ball? e) what is the ball's speed when it comes back to its initial position?

Which of the following descriptions corresponds to a ball tossed vertically upward? Air resistance can be neglected. a. The velocity decreases linearly from v_0 to v_f, with v_0>0 and v_f<0. b. The velocity increases linearly from zero to v_f. c. The position first increases linearly and then decreases linearly as a function of time. d. The acceleration decreases linearly from g to zero.

Starting from rest, the car is going 42 ft/s (29 mi/h) at the end of 4.5 s. What is the car's average acceleration in ft/s2? magnitude       ft/s2 direction      ---Select--- in the direction of motion opposite to the direction of motion  (b) In 3.5 more seconds, the car is going 84 ft/s (57 mi/h). What is the car's average acceleration for this time period? magnitude       ft/s2 direction      ---Select--- in the direction of motion opposite to the direction of motion  (c) The car then slows to 63 ft/s (43 mi/h) in 2.5 s. What is the average acceleration for this time period? magnitude       ft/s2 direction      ---Select--- in the direction of motion opposite to the direction of motion (d) What is the overall average acceleration for the total time? magnitude       ft/s2 direction      ---Select--- in the direction of motion opposite to the direction of motion

10 The engines of a rocket sitting on the ground fire to accelerate the rocket at 3.5 m/s² until it reaches an altitude of 1.2 km. At that point the engines fail and the rocket is in free fall. What height does the rocket reach in m? Assume a constant acceleration of gravity of 9.8 m/s² even at these high altitudes. Enter answer here

A rocket is launched at an angle of 60.0° above the horizontal with an initial speed of 95 m/s. It moves for 3.00 s along its initial line of motion with an acceleration of 32.0 m/s2. At this time its engines fail and the rocket proceeds to move as a free body. a. Find the maximum altitude reached by the rocket. _______m b. Find its total time of flight. _______ s c. Find its horizontal range _______ m

A uniformly accelerating rocket is found to have a velocity of 12.0 m/s when its height is 7.00 m above the ground, and 1.70 s later the rocket is at a height of 57.0 m. What is the magnitude of its acceleration? m/s2

Assume that an MX missile goes from rest to a suborbital velocity of 8.50 km/s in 70.0 s (the actual speed and time are classified). What is its average acceleration in m/s2?  m/s2 What is its average acceleration in multiples of g?  g