Question

Physics assignment.
Q1. A bullet of mass 15g leaves the barrel of a gun with a velocity of 120m/s. The gun recoils with a velocity of 1m/s. Find the mass of the gun.
Q2. A projectile weighing 200 kg is fired from a gun with a velocity of 500m/s. If the velocity of the recoil of the gun is 12.5 m/s. Calculate the mass of the gun.
Q3. A 5kg rifle fires a 10g bullet at a velocity of 500m/s. Find the recoil velocity of the rifle.
Q4. A bullet leaves a rifle with a velocity of 100m/s and the rifle of mass 2.5 kg recoils with a velocity of 1m/s. Find the mass of the bullet.
Q5. Two particles A and B of mass 150g and 250g respectively are approaching each other. Both particles have a a speed of 3m/s. If they stick to each other after colliding. What would be the velocity of the combined mass after the collision?
Q6. A girl of mass 40kg jumps with a horizontal velocity of 5m/s onto a stationary cart with frictionless wheels. The mass of the cart is 3kg. What is her velocity as the cart starts moving ?.
Q7. Two hockey players of opposite teams while trying to hit a hockey ball on the ground collide and immediately become entangled. One has a mass of 60kg and was moving with a velocity of 5m/s. The other has a mass of 55kg and was moving faster with a velocity of 6m/s towards the first player. In which direction and with what velocity will they move after they have entangled?​

Answer 1

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Answer 2

Two hockey players of opposite teams while trying to hit a hockey ball on the ground collide and immediately become entangled. One has a mass of 60kg and was moving with a velocity of 5m/s. The other has a mass of 55kg and was moving faster with a velocity of 6m/s towards the first player. In which direction and with what velocity will they move after they have entangled?