True falseHomework Answers
1] Net force in all the directions should be zero since the acceleration is zero in all the directions.
therefore,
Fx = - 11 N
Fy = - 18 N and Fz = + 2 N
2]
a] True. Net force for an object at rest is always zero.
b] False. A car initially moving at a constant velocity will continue to travel with that velocity until some force slows it down (Eg: friction).
c] False. Their accelerations are also dependent on their masses [a = F/m]
d] True.
e] True.
f] True. According to Newton's third law, the force exerted by the car on the truck and the force exerted by the truck on the car should be equal in magnitude and opposite in direction.
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True false
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