Always T or can be F.
A) During the collision of a car with a large truck, the car exerts a lesser force on the truck than the truck exerts on the car.
False, equal and opposite forces.
B) The net force which acts on an object which maintains a constant velocity is zero.
True, if F=ma and (a) due to constant velocity = 0, then F=0.
C) If a net force acts on an object, the object's speed will change.
False, what if the F is downward on a still box? The speed is the same but the F is different.
D) If two objects have the same acceleration, they are under the influence of equal forces.
False, one object could have a greater mass, therefore a larger force would have to be applied to get the same accel.
E) A bicycle initially moving at a constant velocity will slow down unless a small net force is applied.
I don't know what this question is saying
F) An object's velocity will change if a net force acts on the object
False? Same reason as a still box?
2007-02-12
19:15:06
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5 answers
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asked by
Anonymous
in
Physics