2.5 m/s A 50.0-kg boy runs at a speed of 10.0 m/s and jumps onto a cart as shown in the figure. The cart is initially at rest. If the speed of the cart with the boy on it is 2.50 m/s, what is the mass of the cart? 10 m/s y = 0 A 150 kg B 175 kg C) 260 kg (D 210 kg

8) Your mass is 68.8 kg, and the sled s mass is 11.3 kg. You start at rest, and then you jump off the sled, after which the empty sled is traveling at a speed of 3.10 m/s. What will be your speed on the ice after jumping off? Question 8 options:   0.36 m/s   0.71 m/s   0.61 m/s   0.51 m/s   9) Your mass is 87.6 kg, and the sled s mass is 14.4 kg. The sled is moving by itself on the ice at 3.16 m/s. You parachute vertically down onto the sled, and land gently. What is the sled s velocity with you now on it? Question 9 options:   0.45 m/s   0.32 m/s   0.77 m/s   0.61 m/s

A 3.45 kg black ball traveling 4 m/s has a head on collision with a white one at rest. Using the velocities shown, calculate the mass of the white ball, Ignore friction and air resistance. 0 m/s 4 m/s 1.4 m/s 5.7 m/s

Momentum = mass (Kg) times velocity (m/s). Why does a train longer to stop than a car?

A 9 kg steel ball strikes a wall with a speed of 4.98 m/s at an angle of 30.7° with the normal to the wall. It bounces off with the same speed and angle, as shown in the figure. y 4.98 m/s 30.7° * 30.7° 9 kg 9 kg 1.98 m/s x If the ball is in contact with the wall for 0.255 s, what is the magnitude of the average force exerted on the ball by the wall? Answer in units of N. Your response... i Previous Responses X #1. 201.5089 PALETTE

Two spring-loaded carts are at rest on a low-friction track. The spring is released, pushing the carts away from each other. Positive to the right and negative to the left. The bricks on top of the carts have the same mass as the cart. The blue cart has a speed of 1m/s after the spring is released. Calculate the velocity of the red car after the explosion Before Explosion After Explosion + 5 m/s - 5 m/s +3 m/s O - 3 m/s O +1.5 m/sec O - 1.5 m/sec

Your mass is 63.2 kg, and the sled s mass is 21.7 kg. You start at rest, and then you jump off the sled, after which the empty sled is traveling at a speed of 4.27 m/s. What will be your speed on the ice after jumping off?     1.47 m/s     0.88 m/s     2.06 m/s     1.77 m/s

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Question 15 The graph shows momentum, p, versus time, t, for a spacecraft while it is firing its rocket engines in space. What does the slope of this graph represent? K O the work done on the spacecraft the mass of the spacecraft the net force on the spacecraft the velocity of the spacecraft None of the above

this is a practice problem, not a graded assignment