August 1, 2014

Posts by Lui

Total # Posts: 5

A 8.4 kg laundry bag is dropped from rest at an initial height of 7.00 m. (a) What is the speed of Earth toward the bag just before the bag hits the ground? Use the value 5.98 1024 kg as the mass of Earth. (b) Use your answer to part (a) to justify disregarding the motion of E...

A 6.0 g coin moving to the right at 21.0 cm/s makes an elastic head-on collision with a 20.0 g coin that is initially at rest. After the collision, the 6.0 g coin moves to the left at 12.5 cm/s. a.) Find the final velocity of the other coin in centimeters. b.) Find the amount ...

A 1400 kg car moving south at 11.5 m/s collides with a 2800 kg car moving north. The cars stick together and move as a unit after the collision at a velocity of 5.24 m/s to the north. Find the velocity of the 2800 kg car before the collision.

A 4.4 g bullet is fired into a block of wood with a mass of 21.3 g. The wood block is initially at rest on a 1.3 m tall post. After the collision, the wood block and bullet land 2.4 m from the base of the post. Find the initial speed of the bullet.

algebra 1 page 167 did you hear about...
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