Question

ACTIVE PHYSICS NAME: Work and Power Worksheet Answer cach question by calculating for the missing variable. Be sure to show all calculation work in the space provided with the correct unit. 1. You must exert a force of 4.5 N on a book to slide it across a table. If you do 2.73 of work in the process, how far have you moved the book? F = 4.5N W = 2.7J W=F.d = 2.7 = 4.5.d = = 2. A child pulls a sled up a snow-covered hill. The child does 405 ) of work on the sled. If the child walks 15 m up the hill, how large of a force must the child exert? 3. How much work is done on a small car if a 3150 N force is exerted to move it 75.5 m to the side of the road? 4. A crate is being lifted into a truck. If it is moved with a 2470 N force and 3650 of work is done, then how far is the crate being lifted?

Answer 1

1. 2.7 = 4.5d el = 2.7 - 4.5 TD=0.6m we know that, W= fxd 405 = FXD F = 2 INI along the or paralled to Phill uphill W = . fxd W = (3:50) NX 175.5lm TW = 237.825 KJT ya W = fxd 365o = 2470 x d Id=1.4 77m