An 8-kg ball rolling at 2m/s bumps into a pillow and stops in 0.5s (a) Show that the force exerted by the pillow is 32N
A 6 kg bowling ball rolling at 5 m/s strikes a stationary 4 kg bowling ball. If ball #1 is moving forward at 2 m/s after the collision, what is the speed and direction of ball #2? What is the impulse of the system? If the collision last for .5 seconds, how much force is exerted?
(2)a) A ball is rolling along a horizontal surface. It slows down and finally stops. Explain this in terms of impetus.(something that causes a force to happen more quickly) Explain this in Newtonian terms. b) A student is analyzing a ticker timer tape. At one point, the dots are measured to be 3 cm apart. Calculate the instantaneous speed in m/s. Show all working. (Clue: the frequency of the ticker timer is 50 Hz.) c) A man of mass 69 kg...
A bowling ball of mass 5 kg is rolling at a speed of 6 m/s at the bottom of a 30 degree ramp If the ball rolls up ramp w/out slipping, calculate maximum distance ball travels up ramp before it stops and starts rolling back down
1. A ball of mass 14 kg is rolling towards the wall at 5.00 m/s. After the impact with the wall, the ball rolls back at 4.60 m/s. Calculate the magnitude of change in momentum of the ball. 2. A typical rifle has a mass of 3.0 kg. A bullet in that rifle has a mass of 3.0 g. After the bullet is fired, it has a speed of 100 m/s. Calculate the magnitude of average force exerted by the...
4. A 3 kg ball is rolling toward you at 5 m/s. What magnitude of force (N) needs to be applied over 2 sec to bring the ball to a stop?
Problem -2 A hollow ball of radius 0.5 m and mass 4.5 kg is rolling without slipping on a level surface at a constant speed of 4.0 m/s. The ball rolls up a 40- ramp and eventually stops before rolling back down. (the moment of inertia of a hollow ball of mass M and radius RisMR2) Find: (a) the angular (rotational) speed of the ball (in rad/sec) just before it begins to move up the ramp: (b) the rotational kinetic...
Problem #2 A hollow ball of radius 0.5 m and mass 4.5 kg is rolling without slipping on a level surface at a constant speed of 4.0 m/s. The ball rolls up a 40° ramp and eventually stops before rolling back down. (the moment of inertia of a hollow ball of mass M and radius R is MR2) Find: (a) the angular (rotational) speed of the ball (in rad/sec) just before it begins to move up the ramp; (b) the...
A baseball player hits a ball with a bat. At one moment the force exerted by the bat on the ball is 18,000 N. At that same moment, how much force is exerted on the bat by the ball? a) 18,000 N b) less than 18,000 N c) more than 18,000 N
A pushing force is applied to a 3.5-kg box. It starts from 2m/s and accelerates to 5.2 m/s covering the distance of 6 m. (a) Find the work done by the pushing force. (b) If friction is negligible, find the average force exerted on the box. Find (c) an impulse of the force, (d) the change in the momentum, (e) the final kinetic energy.
Ball A, rolling west at 3.2 m/s, has a mass of 1.0 kg. Ball B has a mass of 2.4 kg and is stationary. After colliding with ball B, ball A moves south at 2.0 m/s.