J# 201-.... Answer all questions with steps and units for full credit. Please re
ID: 1790650 • Letter: J
Question
J# 201-.... Answer all questions with steps and units for full credit. Please return this quiz till Monday, Oct 30, 2018, 12:00 p.m 1. A tow truck pulls a car 5.00 km along a horizontal roadway using a cable having a tension of 850 N. How much work does the cable do on the car if it pulls horizontally? If it pulls at 35.0 above the horizontal? 2·The maximum height a typical human can jump from a crouched start is about 60 cm. By how much does the gravitational potential energy increase for a 72 kg person in such a jump? 3. In 1.00 second muzzle velocity of 88.5 m/s. Calculate the average recoil force experienced by the player who is holding the gun an automatic paintball gun can fire 15 balls, each with a mass of 0.113 g. at aExplanation / Answer
Work = Force * distance, force and distance must be in the same direction
Let’s determine the component of the tension in the direction that the car is moving on the road.
The chain makes an angle of 35 degree with the road and the tension in the chain is 850 N.
Force = Tension * cos theta
Force = 850 * cos 35 degree = 696.28 N
Work = 696.28 N * 5000 m
= 3481400 N m
= 3481400 J answer
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