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Which combination correctly pairs a vector quantity with its corresponding unit?
2.2 N•s
200. N
increasing the height to 2h
velocity and m/s
11 m/s^2
unchanged
5.5 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.
2.2 N•s
200. N
increasing the height to 2h
velocity and m/s
11 m/s^2
unchanged
5.5 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
2.2 N•s
200. N
increasing the height to 2h
velocity and m/s
11 m/s^2
unchanged
5.5 m/s
4.0 m/s^2
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
2.2 N•s
200. N
increasing the height to 2h
velocity and m/s
11 m/s^2
unchanged
5.5 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?
2.2 N•s
200. N
increasing the height to 2h
velocity and m/s
11 m/s^2
unchanged
5.5 m/s
4.0 m/s^2
A 6.0-kilogram cart initially traveling at 4.0 meters per second east accelerates uniformly at 0.50 meter per second squared east for 3.0 seconds. What is the speed of the cart at the end of this 3.0 second interval?
2.2 N•s
200. N
increasing the height to 2h
velocity and m/s
11 m/s^2
unchanged
5.5 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?
2.2 N•s
200. N
increasing the height to 2h
velocity and m/s
11 m/s^2
unchanged
5.5 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?
2.2 N•s
200. N
increasing the height to 2h
velocity and m/s
11 m/s^2
unchanged
5.5 m/s
4.0 m/s^2
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