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1. A 1kg ball with velocity 20m/s bounces perpendicularly off a wall so it has the similar speed afterward if the average force is20000N then how long in milliseconds did the collision take?
a) 1000 ms b) 10 ms c) 5 ms d) 2ms
2. A .5 kg ball, traveling 20 m/s, is struck by a bat, imparting an impulse of 50 Ns in the opposite direction. Discover the speed of the ball after being struck.
a) 50m/s b) 20 m/s c) 30 m/s d) 80 m/s
a velocity selector has its electric field directed vertically downward with magnitude 180nc .part a. find the
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A projectile is fired from the surface of the Earth with a speed of 200 meters per second at an angle of 30 degress above the horizantal. If the ground is level, illustrate what is the maximum height reached by the projectile?
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