All about Measurements
Using scientific notation, decimal places are expressed as powers of ...
A)2
B)5
C)10
D)12
C)10
If a golf ball and a Cannonball are dropped from the same height at the same time which ball will hit the grounf first?
A)the cannonball
B)The golf ball
C)The one with the greater volume
D)They will hit the ground at the same time
D)They will hit the ground at the same time
When the speed of an object is doubled, its momentum?
A)doubles
B)triples
C)quadruples
D) Remains the same
A) Doubles
What is the energy stored in a battery called?
A)Work Energy
B)Thermal Energy
C) Chemical Energy
D)Potential Energy
C) Chemical Energy
Electrical Charge that is built up on the surface of an object is called?
A) protons
B) Electrons
C) Static electricity
D) Current electricity
C) Static electricity
How many significant figures are in 0.00280?
A)3
B)6
C)5
D)2
A)3 sig figs
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will?
A)Accelerate
B)Remain in motion
C)Eventually End up stopping
D)Slow down
B)Remain in motion
Which of the following has the least amount of momentum?
A)a dog running
B) A dog walking
C) An ant at rest
D) A ant walking
D) A ant at rest
A) When you are going upside down
B) At the top of the big hill
C) At the bottom of the big hill
D) When you are going around a corner
B) At the top of the big hill
Which is caused by static electricity?
A) A lightning strike during a storm
B) A Magnet being attracted to a refrigerator
C) A light Bulb turning on when a switch is turned on.
D) A car being turned on
A ) a lightning strike during a storm
Which of these is not an SI unit?
A)Ohms
B)Inches
C)Amperes
D)Seconds
B)Inches
Which of the following statements must be true if an object has zero acceleration?
A)The object has no unbalanced forces acting on it.
B) The object has zero velocity
C) There is friction
D)The object is not moving up or down
A)The object has no unbalanced forces acting on it.
Mr.Cosgrove is running a race, he has a momentum of 100 kg m/s and is traveling at a velocity of 5 m/s.What is his mass?
A) 100kg
B)50kg
C)25kg
D)20kg
D)20 kg
What is the definition of power?
A) The Force that is applied
B) The amount of matter in an object
C) The amount of work you put in
D) The rate at which work is done
D) The rate at which work is done
What type of circuit would be best for wiring your house?
A) Series circuit
B ) Parallel circuit
C) Light Bulb
D) None of the above
B) Parallel Circuit
a scooter accelerates uniformly from rest to a speed of 7.10 m/s over a distance of 35.4 m. Determine the acceleration of the Scooter.
0.712m/s/s
While driving, a bug hits the windshield of a car. This demonstrates Newton’s third law of motion.The bug hit the car and the car hits the bug. Which of the two forces is greater, the force on the bug or the force on the car?
Each force is the same size. For every action, there is an equal.
The star quarterback kicks the football with a force of 20N, the time the force acts for is 0.3 seconds . Calculate the impulse of the ball.
A)6N.s
B)1N.s
C)7N.s
D)3N.s
A)6N.s
True or false . When mechanical energy is conserved , the kinetic energy you end up with always equals the gravitational potential energy you start with?
A) True
B) False
B)False
Which of the following is defined as friction that impedes or slows the flow of current through the circuit?
A)Voltage
B)Electricity
C)currents
D) resistance
D) Resistance
A kangaroo is capable of jumping to a height of 2.62 m. Determine the takeoff speed of the kangaroo.
7.17 m/s
While pushing a very heavy box, Jazmin notices that it was much harder for her to get the box to start moving than it was for her to get the box to continue to move once it had started. This is an example of which mechanics principle?
A)Newton's first law
B)Newton's third law
C)Law of frictional force
D)Newton's second law
A)Newton's first law
The difference between a car hitting a brick wall vs. A car hitting a bush?
A) The force on the car hitting the bush is greater.
B) The impulse on the car hitting the brick wall is greater.
C) The collision time of the car hitting the bush is greater.
D) The change in momentum of the car hitting the brick wall is great.
C)The collision time of the car hitting the bush is greater.
John decides to take an elevator . John weighs 600 N . The elevator lifts him 6m in 10 seconds. How much power was used?
A)360W
B)900W
C)60W
D)600W
A)360W
The terminals of a battery are joined by a length of resistance wire. Which change, on its own, will increase the current through the battery?
A)connecting an identical wire in series with the first one.
B) increasing the temperature of the wire
C) using a shorter wire of the same material and same thickness
D) using a thinner wire of the same material and the same length
C)Using a shorter wire of the same material and same thickness