how long does it take for the block to reach the ground?

Sep 21st, 2015
Anonymous
Category:
Science
Price: $5 USD

Question description

Could you please help me with the last two questions?

Complete the following exercises. (Assume 

g = 9.80 m/s2.)
(a) A small block is released from rest at a height of 1.55 m above the ground and moves downward in free fall.
(i) How long does it take the block to reach the ground?
 Correct: Your answer is correct. 

(ii) What is the speed of the block just before it strikes the ground?
 Correct: Your answer is correct.

(b) A frictionless incline is 5.00 m long (the distance from the top of the incline to the bottom, measured along the incline). The vertical distance from the top of the incline to the bottom is 1.55 m. A small block is released from rest at the top of the incline and slides down the incline.
(i) How long does it take the block to reach the ground?
 Incorrect: Your answer is incorrect. 

(ii) What is the speed of the block just before it strikes the ground?

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