Momentum & Impulse Fastcheck 2

Momentum is a vector quantity.

The standard unit on momentum is the Joule.

An object which is moving at a constant speed has momentum.

An object can be traveling eastward and slowing down; its momentum is westward.

The momentum of an object varies directly with the speed of the object

Two objects of different mass are moving at the same speed; the more massive object will have the greatest momentum.

A less massive object can never have more momentum than a more massive object.

Impulse is a force

The kg•m/s is equivalent to the units on impulse.

A force of 100 N acting for 0.1 seconds would provide an equivalent impulse as a force of 5 N acting for 2.0 seconds.

A truck driving along a highway road has a large quantity of momentum. If it moves at the same speed but has twice as much mass, its momentum is ________________.

In order to catch a ball, a baseball player naturally moves his or her hand backward in the direction of the ball's motion once the ball contacts the hand. This habit causes the force of impact on the players hand to be reduced in size principally because ___.

Suppose that you're driving down the highway and a moth crashes into the windshield of your car. Which undergoes the greater change is momentum?

Cars are equipped with padded dashboards. In collisions, the padded dashboards would be safer than non-padded ones because they ____.

A 4 kg object has a momentum of 12 kg•m/s. The object's speed is ___ m/s.