A tennis player receives a shot with the ball (0.0600 kg)
traveling horizontally at 52.0 m/s and returns the shot with the
ball traveling horizontally at 32.0 m/s in the opposite direction.
(Assume the initial direction of the ball is in the -x
direction.)
(a) What is the impulse delivered to the ball by the racquet?
?
(b) What work does the racquet do on the ball?
How many Joules?
Impulse = Change in momentum.
J = Δp
J = mΔv
J = .06(-32 - 52)
J = -5.04 N*s
Work = ΔKE
= (m/2)(v12 - v22)
= 0.03*[2704 - 1024]
= 50.4 J
A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 52.0 m/s and returns the shot with...
A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 50.0 m/s and returns the shot with the ball traveling horizontally at 38.0 m/s in the opposite direction. (Assume the initial direction of the ball is in the -xdirection.) (a) What is the impulse delivered to the ball by the racket? (b) What work does the racket do on the ball?
My Notes A tennis player receives a shot with the ball (0.060 0 kg) traveling horizontally at 55.0 m/s and returns the shot with the ball traveling horizontally at 39.5 m/s in the opposite direction. (Assume the initial direction of the ball is in the −x direction.) (a) What is the impulse delivered to the ball by the tennis racquet?___________________ î N · s (b) What work does the racquet do on the ball?______________________ J My Notes An estimated force–time...
2. A railroad boxcar rolls on a track at 3.10 m/s toward two identical coupled boxcars, which are rolling in the same direction as the first, but a speed of 1.60 m/s. The first reaches the second two and all couples together. The mass of each is 4.65 x 104kg. (a) Present the physical principle in mathematical form and use it to determine the speed of the three coupled cars after the first couples with the other two. (b) Determine...
Please answer questions 2 and 3, and show which equations you used. Thanks. A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 26.0m/s and returns to the shot initial direction of the ball is in the -x direction.)What is the impulse delivered to the ball by the tennis racket? Some work is done on the system of the ball and some energy appears for the ball? A man claims that he can hold onto a...
A tennis ball of mass 0.0600 kg is initially moving horizontally with a speed of 25.0 m/s. A tennis player hits it with his racket with an average force of 66 N, sending the ball back in the opposite direction with a speed of 35.0 m/s. For how much time was the racket and ball in contact, in units of seconds?
A 0.275-kg volleyball approaches a player horizontally with a speed of 16.6 m/s. The player strikes the ball with her fist and causes the ball to move in the opposite direction with a speed of 22.4 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...
A 0.277-kg volleyball approaches a player horizontally with a speed of 16.8 m/s. The player strikes the ball with her fist and causes the ball to move in the opposite direction with a speed of 22.6 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...
A 2.0-g particle moving at 5.2 m/s makes a perfectly elastic head-on collision with a resting 1.0-g object. (a) Find the speed of each particle after the collision 2.0g particle: 1.0g particle: (b) Find the speed of each particle after the collision if the stationary particle has a mass of 10 g. 2.0g particle: 10.0g particle: (c) Find the final kinetic energy of the incident 2.0-g particle in the situations described in parts (a) and (b). KE in part a:...
A 0.261-kg volleyball approaches a player horizontally with a speed of 14.2 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...
A tennis player serves a tennis ball such that it is moving horizontally when it leaves the racquet. When the ball travels a horizontal distance of 16 m, it has dropped 59 cm from its original height when it left the racquet. What was the initial speed, in m/s, of the tennis ball? (Neglect air resistance.)