A projectile (mass = 0.26 kg) is fired at and embeds itself in a stationary target (mass = 2.40 kg). With what percentage of the projectile's incident kinetic energy does the target (with the projectile in it) fly off after being struck? 7.69 Additional Materials

Calculate percent loss of kinetic energy

1. A firecracker travels straight up at 75.0m/s and explodes into two pieces. The smaller piece carries one third of the firecracker's mass and shoots off horizontally at 48.0m/s west. Determine the speed and direction of the other piece directly after the explosion. 2. Three blocks slide on a smooth surface. Initially, the first block (m1=1.0kg) moves at 3.0m/s to the right, the second block (m2=2.0kg) is at rest, and the third block (m3=3.0kg) moves to the left at 0.50m/s. First, m1 collides elastically with m2 and recoils to the left. Afterwards, m2 and m3 collide and stick. Calculate, a. the velocities of m1 and m2 after the first collision. b. the velocity of m2 and m3 after the second collision.

3 A ball has a momentum of 12.3 kg.m/s to the right. It then collides with another stationary ball. What is the total momentum of the two balls after the collision? 13.2 kg.m/s 6.60 kg.m/s 26.4 kg.m/s 52.8 kg.m/s

A 190-g projectile is fired with a velocity of +730 m/s at a 2.3-kg wooden block that rests on a frictionless table. The velocity of the block, immediately after the projectile passes through it, is +20 m/s. Find the velocity with which the projectile exits from the block. m/s What percentage of the original kinetic energy of the projectile is lost in the collision? %

QUESTION 5 Same situation as before. This time it s a block of mass 1.91 kg sliding with a constant velocity of 4.88 m/s to the north, which collides 100% elastically with a second, stationary block, of mass 3.41 kg, head-on, and rebounds back to the south, eventually colliding 100% elastically with a wall and rebounding northward. It then overtakes the second block, which is still moving north as a result of the first collision. What will be the speeds of the 1.91-kg and 3.41-kg blocks, respectively, after their SECOND collision with one another?   A 5.46 m/s and 1.96 m/s   B 2.15 m/s and 4.11 m/s   C 1.69 m/s and 3.04 m/s   D 2.42 m/s and 6.26 m/s

A 27.5-g object moving to the right at 22.0 cm/s overtakes and collides elastically with a 10.5-g object moving in the same direction at 15.0 cm/s.Find the velocity of each object after the collision. (Take the positive direction to be to the right. Indicate the direction with the sign of your answer.) 27.5-g object     cm/s 10.5-g object     cm/s

Can you help me with this problem A 0.156 kg glider is moving to the right on a frictionless, horizontal air track with a speed of 0.900 m/sm/s. It has a head-on collision with a 0.291 kg glider that is moving to the left with a speed of 2.15 m/s Suppose the collision is elastic.Find the magnitude of the final velocity of the 0.156 kg glider in m/s. Find the magnitude of the final velocity of the 0.291 kg glider in m/s

QUESTION 5 Same situation as before. This time it s a block of mass 1.45 kg sliding with a constant velocity of 4.17 m/s to the north, which collides 100% elastically with a second, stationary block, of mass 4.22 kg, head-on, and rebounds back to the south, eventually colliding 100% elastically with a wall and rebounding northward. It then overtakes the second block, which is still moving north as a result of the first collision. What will be the speeds of the 1.45-kg and 4.22-kg blocks, respectively, after their SECOND collision with one another?     2.74 m/s and 3.85 m/s     1.24 m/s and 2.29 m/s     2.48 m/s and 6.96 m/s     2.86 m/s and 0.73 m/s