A tennis ball, with a velocity of 6.2 m/s, impinges at an angle of ? = 30˚ (with respect to the vertical line) on a fixed and smooth horizontal table. Given the coefficient of restitution is 0.5, determine the velocity and the direction of the ball after collision with the table

A cannon of mass 6.13 x 10³ kg is rigidly bolted to the earth so it can recoil only by a negligible amount. The cannon fires a 74.5-kg shell horizontally with an initial velocity of 590 m/s. Suppose the cannon is then unbolted from the earth, and no external force hinders its recoil. What would be the velocity of a shell fired from this loose cannon? (Hint: In both cases assume that the burning gunpowder imparts the same kinetic energy to the system.) Number i Units ◄►

A 375 gram basketball is bounced off of a wooden board, as shown below. It is moving straight down at a speed of 4.75 m/s just before hitting the board, and it is moving with a speed of 3.75 m/s at an angle of 27.5 degrees above the horizontal just after. The ball is in contact with the board for a total of 68.5 milliseconds (ms). A)Find the average force that the board exerts on the ball during the bounce. Give the magnitude of the force in units of Newtons. Give the direction of the force as an angle from the x-axis, in degrees.  B) How much kinetic energy is lost as a result of the ball hitting the board? Give your answer in Joule

Given: The ball strikes the smooth wall with a velocity (v b) 1 = 20 m/ s. The coefficient of restitution between the ball and the wall is e = 0.75. Find height max and distance after impact. (Vb)2 0 30° (Vb)₁ = 20 m/s Ay X

1) A baseball with a mass of 137 g is thrown horizontally with a speed of 40.6 m/s (91 mi/h) at a bat. The ball is in contact with the bat for 1.05 ms and then travels straight back at a speed of 45.4 m/s (102 mi/h). Determine the average force (in N) exerted on the ball by the bat. Neglect the weight of the ball (it is much smaller than the force of the bat) and choose the direction of the incoming ball to be positive.    2)A 4.50 gram bullet is fired from a rifle at a horizontal speed of 210 m/s. If the rifle has a weight of 25.0 N and is initially motionless, determine the recoil speed of the rifle.

A 0.750 kg hammer is moving horizontally at 4.50 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. (a) Calculate the duration of the impact in seconds. (b) What was the average force in newtons exerted on the nail? |N

In a game of billiards, the cue ball is traveling eastward when it strikes a second ball that is initially at rest. After the collision, the cue ball moves at 4.65 m/s, 25.0° south of east, and the second ball's speed is 3.11 m/s. At what angle (north of east) does the second ball travel? Assume each ball has a mass of 162 g. Submit A Tries 0/5 What was the speed of the cue ball prior to the collision? Tries 0/5 Is the kinetic energy of the colliding balls conserved? (Ignore the rotation of the balls.) Correct: No Incorrect Yes

A small block of mass m, - 0.755 kg is released from rest at the top of a curved wedge of mass m, = 3.50 kg, which sits on a frictionless horizontal surface as in figure (a). When the block leaves the wedge, its velocity is measured to be 4.00 m/s to the right, as in figure (b). m2 4.00 m/s (a) What is the velocity of the wedge after the block reaches the horizontal surface? (Enter the magnitude of the velocity.) m/s (b) What is the height h of the wedge?

A baseball (m = 148 g) approaches a bat horizontally at a speed of 40.7 m/s (91.1 mi/h) and is hit straight back at a speed of 51.6 m/s (115 mi/h). If the ball is in contact with the bat for a time of 1.45 ms, what is the average force exerted on the ball by the bat? Neglect the weight of the bat, since it is so much less than the force of the bat. Choose the direction of the incoming ball as the positive direction.