Question

1. To determine the location of the center of gravity of a car, the car is driven over a scale on a horizontal floor. When the front wheels are over the scale, the weight recorded by the scale is 5.79 x 10³ N, and when the rear wheels are over the scale, the scale reads 6.51 x 10³ N. The distance between the front and rear wheels is measured to be 3.20 m. How far behind the front wheels is the center of gravity located?

A 0.850 m

B 1.51 m

C 1.60 m

D 1.69 m

E None of these.

2. A force of 20. newtons acts on a particular object for 10. seconds. For how much time must a 50.-newton force act on the same object to produce the same impulse?

A 2.0 s

B 4.0 s

C 5.0 s

D 10.0 s

E None of these.

Answer 1

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