A ball of mass 0.150 kg is dropped from rest from a heightof 1.25 m. It rebounds from the floor to reach a height of0.960 m. What impulse was given to the ball by the floor?

A 205 kg object, initially at 12 m s-!, undergoes an impulse of 515 Ns in the opposite direction. Calculate the final velocity of the object?

A ball falls from height of 20.0 m, hits the floor, and rebounds vertically upward to height of 15.0 m. Assume that m ball = 0.385 kg. (a) What is the impulse (in kg. m/s) delivered to the ball by the floor? magnitude x direction 979.1 Assume the only impulse delivered to the ball is from the floor, which equals the change in momentum of the ball. Find the initial and final speeds of the ball using conservation of mechanical energy, and calculate Ap noting that all the motion is in the y-direction. kg. m/s up ✓✓ (b) If the ball is in contact with the floor for 0.0300 seconds, what is the average force (in N) the floor exerts on the ball? magnitude 19.223 x Use the impulse-momentum theorem and the result from part (a) to find the force, given that the contact time interval is 0.0300 s. N up direction ✓✓

A 0.263-kg volleyball approaches a player horizontally with a speed of 12.8 m/s. The player strikes the ball with her fist and causes the ball to move in the opposite direction with a speed of 21.7 m/s. (a) What impulse is delivered to the ball by the player? (Take the direction of final velocity to be the positive direction. Indicate the direction with the sign of your answer.) kg • m/s (b) If the player's fist is in contact with the ball for 0.0600 s, find the magnitude of the average force exerted on the player's fist.

A rubber ball of mass 29.5 g is dropped from a height of 1.95 m onto a floor. The velocity of the ball is reversed by the collision with the floor, and the ball rebounds to a height of 1.55 m. What impulse was applied to the ball during the collision?

Two equal mass balls (one white and the other black) are dropped from the same height, and rebound off the floor. The white ball rebounds to a higher position. Which ball is subjected to the greater magnitude of impulse during its collision with the floor? 
Explain.

24.A 2.4 kg ball drops vertically onto a floor, hitting with a speed of 25 m/s. It rebounds with an initial speed of 10 m/s. (a) What impulse acts on the ball during the contact?(b) If the ball is in contact with the floor for 0.020 s, what is the magnitude of the average force on the floor from the ball? a. 42 kg m/s, 2100N b. 84 kg m/s, 4200N c. 84 kg m/s, 2100N d.42 kg m/s, 4200N

A 0.261-kg volleyball approaches a player horizontally with a speed of 17.0 m/s. The player strikes the ball with her fist and causes the ball to move in the opposite direction with a speed of 21.8 m/s. (a) What impulse is delivered to the ball by the player? (Take the direction of final velocity to be the positive direction. Indicate the direction with the sign of your answer.) kg - m/s (b) If the player's fist is in contact with the ball for 0.0600 s, find the magnitude of the average force exerted on the player's fist. Need Help? Read It

A rubber ball of mass 30.0 g is dropped from a height of 2.00 m onto a floor. The velocity of the ball is reversed by the collision with the floor, and the ball rebounds to a height of 1.50 m. What impulse was applied to the ball during the collision?

(a) What impulse must be imparted to a golf ball of mass 0.045 kg to give it a velocity of 46.5 m/s?(b) If the golf club is in contact with the ball as it is accelerated over an interval of 1.21 cm, estimate the average force exerted on the ball by the club.