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A tennis player’s racket applies an average force of 200. newtons to a tennis ball for 0.025 second. The average force exerted on the racket by the tennis ball is
unchanged
11 m/s^2
increasing the height to 2h
45°
2.2 N•s
200. N
velocity and m/s
4.0 m/s^2
While taking off from an aircraft carrier, a jet starting from rest accelerates uniformly to a final speed of 40. meters per second on a runway that is 70. meters long. What is the magnitude of the acceleration of the jet?
unchanged
11 m/s^2
increasing the height to 2h
45°
2.2 N•s
200. N
velocity and m/s
4.0 m/s^2
Starting from rest, a car travels 18 meters as it accelerates uniformly for 3.0 seconds. What is the magnitude of the car’s acceleration?
unchanged
11 m/s^2
increasing the height to 2h
45°
2.2 N•s
200. N
velocity and m/s
4.0 m/s^2
A golf club hits a stationary 0.050-kilogram golf ball with an average force of 5.0 × 103 newtons, accelerating the ball to a speed of 44 meters per second. What is the magnitude of the impulse imparted to the ball by the golf club?
unchanged
11 m/s^2
increasing the height to 2h
45°
2.2 N•s
200. N
velocity and m/s
4.0 m/s^2
Which combination correctly pairs a vector quantity with its corresponding unit?
unchanged
11 m/s^2
increasing the height to 2h
45°
2.2 N•s
200. N
velocity and m/s
4.0 m/s^2
A projectile with mass m is fired with initial horizontal velocity vx from height h above level ground. Which change would have resulted in a greater time of flight for the projectile? Neglect friction.
unchanged
11 m/s^2
increasing the height to 2h
45°
2.2 N•s
200. N
velocity and m/s
4.0 m/s^2
A 12.0-kilogram cart is moving at a speed of 0.25 meter per second. After the speed of the cart is tripled, the inertia of the cart will be
unchanged
11 m/s^2
increasing the height to 2h
45°
2.2 N•s
200. N
velocity and m/s
4.0 m/s^2
At which angle above the horizontal should the ball be kicked in order for the ball to travel the greatest total horizontal distance? Neglect friction.
unchanged
11 m/s^2
increasing the height to 2h
45°
2.2 N•s
200. N
velocity and m/s
4.0 m/s^2
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