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Part A A 22-g bullet traveling 280 m/s penetrates a 1.8 kg block of wood and emerges going 140 m/s If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges? Express your answer to two significant figures and include the appropriate units. ? Up = Value Units Submit Previous Answers Request AnswerPart A A block of mass m = 2.50 kg starts from the rest and slides down a 30.0" incline which is 3.60 m high. At the bottom, it strikes a block of mass M = 7.00 kg which is at rest on a Determine the speed of the block with mass m = 2.50 kg after the collision. horizontal surface (Figure 1). (Assume a smooth transition at the bottom of the incline.) The collision is elastic, and friction can be ignored. Express your answer to three significant figures and include the appropriate units. HA Um = Value Units Submit Request Answer Part B Determine the speed of the block with mass M = 7.00 kg after the collision. Express your answer to three significant figures and include the appropriate units. HA Figure UM = Value Units Submit Request Answer Part C m Determine what distance along the incline will the smaller mass climb back after the collision. 3.60 m 30.09 M Express your answer to three significant figures and include the appropriate units. HA d' = Value UnitsPart A A tennis ball of mass m = 0.031 kg and speed v = 23 m/s strikes a wall at a 45 angle and rebounds with the same speed at 450 (Figure 1) What is the magnitude of the impulse given to the ball? Express your answer to two significant figures and include the appropriate units. - C E ? FAt = Value Units Figure 1 of 1 > Submit Request Answer Part B 450 What is the direction of the impulse given to the ball? O upward 450 O downward O to the left O to the rightProblem 7.28 22 of 30 Constants V Part A Two billiard balls of equal mass undergo a perfectly elastic head-on collision. If one ball's initial speed was 2.50 m/s, and the other's was 3.70 m/s in the opposite direction, what will be their velocities after the collision? Enter your answers numerically separated by a comma. Enter positive value if the direction of the velocity is the same as the direction of the initial velocity of the first ball, and negative value if the direction of the velocity is opposite to the direction of the initial velocity of the first ball. DA AEd V1, V2 = m/s Submit Request Answer Provide Feedback Next >Part A A ball of mass 0.265 kg that is moving with a speed of 5.9 m/s collides head-on and elastically with another ball initially at rest. Immediately after the collision, the incoming ball bounces backward with a speed of 3.9 m/s . Calculate the velocity of the target ball after the collision. Express your answer to two significant figures and include the appropriate units. HA U = Value Units Submit Request Answer Part B Calculate the mass of the target ball. Express your answer to two significant figures and include the appropriate units. HA ? m = Value UnitsPart A A 25-g rifle bullet traveling 210 m/s embeds itself in a 4.0-kg pendulum hanging on a 2.7-m-long string, which makes the pendulum swing upward in an arc. (Figure 1) Determine the vertical component of the pendulum's maximum displacement. Express your answer to two significant figures and include the appropriate units. HA Aymax = Value Units Figure Part A Two astronauts, one of mass 61 kg and the other 81 kg , are initially at rest together in outer space. They then push each other apart. How far apart are they when the lighter astronaut has moved 11 m ? Express your answer to two significant figures and include the appropriate units. HA ? d= Value Units Submit Request Answer Provide Feedback