Download FORCE and NEWTON`S LAWS of MOTION

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Ch5 – HW (FORCE and NEWTON’S LAWS of MOTION)
Questions 1-6 pertain to the diagram.
1. What is the acceleration of the car?
2. The cars tires apply a force of 2000N to the road. According to Newton’s third law is this force
an action force. What is the magnitude of the reaction force?
3. In what direction does the reaction force act?
4. What is the mass of the car?
5. What is the weight of the car?
6. The acceleration due to gravity on the Moon is 1.66m/s2. How much would this car weigh on
the moon?
7. The SI ( metric) unit of velocity is___.
8. The SI (metric) unit of mass is ____.
9. The SI ( metric) unit of distance or displacement is ____.
10. The SI ( metric) unit of acceleration is ____.
11. The SI ( metric) unit of force is ____.
LPPACS – Schmidt
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12. An elevator starts from rest with a constant upward acceleration and moves 1 m in the first
1.5 s. A passenger in the elevator has a mass of 75 kg. What is the normal force exerted on
the passenger as the elevator accelerates?
13. A dog on Earth weighs 136 N. The same dog weighs 154 N on Neptune. What is the
acceleration due to gravity on Neptune?
14. A crate of salmon is lifted to a truck by using a ramp. If the box and ramp connection has a
coefficient of friction of 0.4, with what force must the box be pushed parallel to the ramp in
order to push it up the ramp with an acceleration of 1.5 m/s2?
15. A circus clown drags a “bag o’ gags,” of mass 25 kg, around the big top. If the friction is
magically negligible,
a. What acceleration would be reached if the clown pulls the bag with a force of 20 N at
an angle of 35°?
b. What would be the normal force exerted on the bag?
LPPACS – Schmidt
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