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Indicate whether the following statements are always true or can be false. (Sele

ID: 1535896 • Letter: I

Question

Indicate whether the following statements are always true or can be false. (Select T-True, F-False. If the first is F and the rest T, enter FTTTTT).

A) The NET force which acts on an object which maintains a constant velocity is zero.

B) During the collision of a car with a large truck, the truck exerts an equal size force on the car as the car exerts on the truck.

C) If two objects are under the influence of equal forces, they have the same acceleration.

D) An object's velocity will change if a NET force acts on the object.

E) In order not to slow down, a bicycle moving at a constant velocity needs a small NET force applied.

F) If a NET force acts on an object, the object's speed will change.

Explanation / Answer

A)True

since, F = ma ; for constant velocity, a = 0, F = ma = 0.

B)True

Because the contact force is same.

C)False

F = ma=> a = F/m ;

Not always the acceleration would be same, it completely depends on the mass of the objects. If its same then a is same else different.

D)True

F = ma ; a is the rate of change of velocity.

E)False

from law of inertia, an object will keep moving until and unless some unbalanced force acts on it.

F)False.

F = ma ; a is rate of change of velocity.