Posted by molly on Monday, October 4, 2010 at 1:37pm.
true or false
If a net force acts on an object, the object's speed will change.
Usually, but not for example if going in a circle.
An object's velocity will change if a net force acts on the object.
Yes, magnitude or direction or both
If two object have the same acceleration, they are under the influence of equal forces.
What if they have different masses?
The net force which acts on an object which remains at rest is zero.
Guess so or it would accelerate.
A truck initially moving at a constant velocity will slow down unless a small net force is applied
In practice yes due to air drag and other frictional forces
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.
The force on one is equal in magnitude and opposite in direction to the force on the other. The resulting accelerations are quite different.
thanks, i got them all except for the first one.
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