Cat. 1
A roller coaster at an amusement park goes from the top of a hill to the bottom. During this time, the roller coaster...
A gains both potential and kinetic energy.
B loses both potential and kinetic energy.
C loses kinetic energy and gains potential energy.
D loses potential energy and gains kinetic energy.
D loses potential energy and gains kinetic energy.
Potential energy that depends on the height of an object is called...
A kinetic energy.
B gravitational potential energy.
C elastic potential energy.
D mechanical energy
B gravitational potential energy.
A car rolls down a ramp. What is the force acting on the car that causes the movement down the ramp?
A acceleration
B centripetal
C friction
D gravity
D gravity
One type of potential energy is elastic energy. This is energy that is stored up and then released by objects that can stretch and snap back, like springs and rubber bands. Arya, Mason, and Lauren each have the same type of slingshot. Arya is not stretching hers out at all. Mason has his halfway stretched out. Lauren has hers fully stretched out. Which slingshot contains the most potential elastic energy?
A Arya's unstretched slingshot
B Lauren's fully stretched slingshot
C Mason's halfway stretched slingshot
D All the slingshots have an equal amount of potential elastic energy
B Lauren's fully stretched slingshot
These children are playing tug-of-war, a contest in which each team tugs on a rope to pull the other team across the line. Everyone is tugging on the rope, but no one is moving because...
A the net force of the two teams is zero.
B the children do not have enough mass to create force.
C the rope resists any change in motion.
D there is too much friction for the rope to move.
A the net force of the two teams is zero.
A car traveling at 65mph is an example of its
A speed
B velocity
C direction
D pressure
A speed
Balanced forces acting on an object...
A always change the object's motion
B sometimes change the object's motion.
C never change the object's motion.
D are not related to motion.
C never change the object's motion.
A soccer ball rolls to a stop along a grassy field without anyone touching it. What answer BEST explains why this occurred?
A The initial force that started the ball ran out.
B The opposing force of friction stopped the ball.
C The natural state of the ball is to not be in motion.
D The force of gravity slowed the ball until it stopped.
B The opposing force of friction stopped the ball.
As a speed skater races down the track, the speed skater's kinetic energy depends on the speed skater's...
A mass and direction
B velocity and direction
C direction
D mass and speed
D mass and speed
Which of these are true of Sir Isaac Newton?
A He was an English physicist.
B He was a mathematician.
C He died last year.
D He formulated the three basic laws of motion we still use today.
A He was an English physicist.
B He was a mathematician.
D He formulated the three basic laws of motion we still use today.