The speed of a bullet can be measured by firing it at a wooden cart initially at rear and measuring the speed of the cart with the bullet embedded in it. Figure P4.80 shows a 12-g bullet fired at a 4.0-kh cart. After the collision, the cart rolls at 1.8 m/s. What is the bullet's speed before it strikes the cart?

You find yourself stuck in outerspace with nothing but your physics book and spacesuit. You have a mass of 108kg in your suit and your physics book has a mass of 3.7 kg. In order to make it back to your stationary spaceship before running out of air you must move at .29 m/s. How fast in m/s do you have to throw your physics book to achieve the speed

A child runs at 3.0 m/s and jumps onto a sled, initially at rest. If the child's mass is 40 kg, and the sled's mass is 20 kg, what is the speed the child and sled slide off together after the collision? O2.0 m/s O 0.5 m/s O 3.0 m/s O 1.0 m/s

A 4.00kg ball hits a wall moving at a speed of 9.0m/s at and angel of 45.0 degrees. If the wall does not move due to the collision at what speed and angle does the ball at the end of the interaction?

A truck (M = 2500kg) collides with a car (m = 1000kg) at a 4-way intersection. Fortunately nobody gets hurt. Suppose the car is going north at 20m/s ( about 45mph) and the truck is coming from the east at 10m/s ( about 22mph). The car and truck stick together after the %3D collision. (a) Find the speed and direction of the car and truck immediately after the collision. (b) Approximately how much energy went into the deformation of the metal that caused the two vehicles to stick together? (c) What assumptions did you make? The

A 35.0 g bullet strikes a 5.0 kg stationary wooden block and embeds itself in the block. The bullet and block fly off together at 8.6 m/s. What was the original velocity of the bullet? A 1.24 m/s B 9.83 m/s 144 m/s D 1240 m/s O O O O

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

Big Boris (90kg) skates backward, 1.0 meter ahead of small skater Sofia (45 kg) , holding her hand as they travel 3.0 "/s . At the 30-second mark, Boris starts pulling Sofia past him, so that by 32.0 s she is 1.0 m ahead of him. During that move, what was Sofia's average velocity, relative to Boris? -0.5 m/s -2.0 m/s +2.0 m/s -1.0 m/s +0.5 m/s +1.0 m/s

A 2.00 kg ball falls off a 200.00 cm high wall. If the time during the collision is 0.050 seconds, what is the force of impact caused by the ground on the ball? USE SIGNIFICANT FIGURES in the answer!

Yolanda is at the firing range practicing how to shoot a gun. A 12 g bullet is fired from her gun and moves vertically upwards at a velocity of 950m/s and strikes a 2kg brick which is originally at rest, as shown in the picture below. If the bullet emerges from the brick at a speed of 290m/s, help Yolanda figure out; 1. What is the The max height to which the brick rises ? 2. What is The increase in the internal energy of the bullet-brick system? 290 m/s 950 m/s