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An arrow traveling at 40 m/s strikes and imbeds itself in a 400 g apple at...

  1. An arrow traveling at 40 m/s strikes and imbeds itself in a 400 g apple at rest. The apple with the arrow in it moves off horizontally at 10 m/s after the impact. Calculate the mass of the arrow.

  2. A squid can propel itself by taking water into its body and then expelling it. A 0.60 kg squid expels 0.30 kg of water with a velocity of 20 m/s [S]. Calculate the speed of the squid immediately after expelling the water.

  1. A pickup truck having mass 1700 kg is traveling due north at 30 ms when it collides with a tree and comes to rest in 62 ms. Calculate the average force exerted by the truck on the tree.

  2. Mary is pushing snow as shown with a force of 45 N at an angle of 38° to the ground. The sleigh starts from rest and accelerates to 8.0 m/s in 2.5 s. Calculate the work done.

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