Newton's Laws Of Motion Question Preview (ID: 60480)


Laws Of Motion. TEACHERS: click here for quick copy question ID numbers.

A 65.0 kg astronaut weighs 638 newtons at the surface of Earth. What is the mass of the astronaut at the surface of the Moon where acceleration of gravity is 1.62 m per s2?
a) 10.7 kg
b) 65.0 kg
c) 105N
d) 638N

Which quantity is a vector
a) power
b) kinetic energy
c) speed
d) weight

When the sum of all the forces acting on a block on an inclined plane is zero, the block
a) must be at rest
b) must be accelerating
c) may be slowing down
d) may be moving at constant speed

The greatest increase in the inertia of an object would be produced by increasing the
a) mass of the object from 1.0 kg to 2.0 kg
b) net force applied to the object from 1.0N to 2.0N
c) time that a net force is applied to the object from 1.0s to 2.0s
d) speed of the object from 1.0m/s to 2.0 m/s

A 100 kg cart accelerates at 0.50 m per s squared west as a horse exerts a force of 60 N west on the cart. What is the magnitude of the force that the cart exerts on the horse?
a) 10 N
b) 50 N
c) 60 N
d) 110 N

The magnitude of an unbalanced force applied to a 4.0 kg crate is 10. N. If the magnitude of this applied unbalanced force is doubled, the inertia of the crate is
a) halved
b) unchanged
c) doubled
d) quadrupled

Which terms identify two scalar quantities?
a) force and acceleration
b) impulse and distance
c) mass and velocity
d) energy and time

A student throws a 5.0 N ball straight up. What is the net force on the ball at its maximum height?
a) 0.0 N
b) 5.0 N up
c) 5.0 N down
d) 9.8 N down

A 1.5 kg cart initially moves at 2.0 meters per second. It is brought to rest by a constant net force in 0.30 second. What is the magnitude of the net force?
a) 0.40 N
b) 0.90 N
c) 10. N
d) 15 N

Which object has the greatest inertia?
a) a 0.010 kg bullet traveling 90. m/s
b) a 30. kg child traveling at 10. m/s on her bike
c) a 490 kg elephant walking with a speed of 1.0 m/s
d) a 1500 kg car at rest in a parking lot

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