G
gmears127
Guest
A
15 g object moving to the right at 23 cm/s overtakes and collides elastically with
a 26 g object moving in the same direction at 13 cm/s. Find the velocity of the object which is slower after the collision. Answer in units of cm/s.
A golf ball (m = 43.5 g) is struck a blow that makes an angle of 25.2◦ with the horizontal.
The drive lands 145 m away on a flat fairway. The acceleration of gravity is 9.8 m/s2 .
If the golf club and ball are in contact for 2.88 ms, what is the average force of impact?
Neglect air resistance. Answer in units of N.
A 8.33 kg laundry bag is dropped from rest at an initial height of 5.93 m. The acceleration of gravity is −9.81 m/s2 . Use the value 5.98 × 1024 kg as the mass of
Earth. What is the speed of Earth toward the bag just before the bag hits the ground? Answer in units of m/s.
A 44 kg man holding a 0.761 kg ball stands on a frozen pond next to a wall. He throws
the ball at the wall with a speed of 15.7 m/s (relative to the ground) and then catches the ball after it rebounds from the wall. How fast is he moving after he catches the
ball? Ignore the projectile motion of the ball, and assume that it loses no energy in its collision with the wall. Answer in units of m/s.
15 g object moving to the right at 23 cm/s overtakes and collides elastically witha 26 g object moving in the same direction at 13 cm/s. Find the velocity of the object which is slower after the collision. Answer in units of cm/s.
A golf ball (m = 43.5 g) is struck a blow that makes an angle of 25.2◦ with the horizontal.
The drive lands 145 m away on a flat fairway. The acceleration of gravity is 9.8 m/s2 .
If the golf club and ball are in contact for 2.88 ms, what is the average force of impact?
Neglect air resistance. Answer in units of N.
A 8.33 kg laundry bag is dropped from rest at an initial height of 5.93 m. The acceleration of gravity is −9.81 m/s2 . Use the value 5.98 × 1024 kg as the mass of
Earth. What is the speed of Earth toward the bag just before the bag hits the ground? Answer in units of m/s.
A 44 kg man holding a 0.761 kg ball stands on a frozen pond next to a wall. He throws
the ball at the wall with a speed of 15.7 m/s (relative to the ground) and then catches the ball after it rebounds from the wall. How fast is he moving after he catches the
ball? Ignore the projectile motion of the ball, and assume that it loses no energy in its collision with the wall. Answer in units of m/s.