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WorksheetsLinear momentum
Total questions: 20
Worksheet time: 23mins
An open cart rolls along a frictionless track while it is raining. As it rolls, what happens to the speed of the cart as the rain collects in it? (assume that the rain falls vertically into the box)
stops immediately
maintains constant speed
speeds up
slows down
A system of particles is known to have a total momentum of zero. Does it necessarily follow that the total kinetic energy of the system is also zero?
yes
no
Two objects are known to have the same momentum. Do these two objects necessarily have the same kinetic energy?
yes
no
A small car and a large truck collide head-on and stick together. Which one has the larger momentum change?
the car
the truck
they both have the same momentum change
Two boxes, one heavier than the other, are initially at rest on a horizontal frictionless surface. The same constant force F acts on each one for exactly 1 second. Which box has more momentum after the force acts ?
the heavier one
both the same
the lighter one
In the previous question, which box has the larger velocity after the force acts?
both the same
the heavier one
the lighter one
A small beanbag and a bouncy rubber ball are dropped from the same height above the floor. They both have the same mass. Which one will impart the greater impulse to the floor when it hits?
the beanbag
the rubber ball
both the same
A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The impulse on the ball is ______ N s.
-2.5
-10
-18
-45
The type of collision represented by these two masses is
An astronaut in a space suit is motionless in outer space. The propulsion unit strapped to her back ejects some gas with a velocity of 50 m/s. The astronaut recoils with a velocity of 1.0 m/s. If the mass of the astronaut and space suit after the gas is ejected is 120 kg, the mass of the gas ejected is
1.0 kg.
1.9 kg.
2.4 kg.
3.00 kg.
3.6 kg.
