WorksheetsPhysics - Final Test
Total questions: 20
Worksheet time: 5hrs 0mins
What is displacement?
the change in position of an object
how much an object moves
the way that an object moves
how fast an object moves
What is acceleration?
change of velocity per unit of time
change in speed
how much an object speeds up
change in displacement over time
What kind of quantity is velocity?
a vector quantity
a scalar quantity
neither of these
If an object has negative acceleration, it means...
The velocity is increasing
The velocity is decreasing
The velocity is constant
The object is stationary
A boat sailing against the current experiences a negative acceleration of 10 m/s2. If the boat’s initial velocity is 40 m/s upstream, how long until it comes to a stop?
4 s
9.8 s
4.4 s
12 s
Weight is calculated by
mass X gravity
mass X velocity
acceleration X velocity
The weight of a cart with a mass of 150 kg is (a) N.
(Use 9.8 m/s2 for g)
Outside wooden steps may get slippery when they are wet. How could you make them less slippery? Choose 3.
give the steps a rougher surface
cover the steps with sandy paint
increase friction
pour oil on them
wear rubber soled shoes
The force of friction always __________________ motion.
opposes
adds to
does not affect
Newton’s third law of motion states that every action has a(n) _____________ and ____________ reaction.
gentle and appropriate
unequal and opposite
equal and opposite
If a 65-kilogram astronaut exerts a force with a magnitude of 50. N on a satellite that she is repairing, the magnitude of the force that the satellite exerts on her is (a)
If you punch a wall with a force of 30 N, what force will you feel on your fist? F = (a) N
_____________ is energy that an object stores due to its position.
potential energy
kinetic energy
mechanical energy
thermal energy
As an object is lifted higher from the Earth's surface, its potential energy _______________.
increases
descreases
stays the same
none of these
What is kinetic energy?
energy of motion
energy due to position
energy due to chemical bonds
energy due to heat
What is a machine?
Anything that can make a force bigger
Anything that can make a force smaller
A complicated gadget
Something only scientists build
How do you calculate momentum?
momentum = mass X velocity
momentum = weight X acceleration
momentum = height X width
momentum = force X gravity
A car with a mass of 1000 kg is moving with a velocity of 35 m/s to the right. What is the car's momentum?
35,000 kg X m/s
35 kg X m/s
1000 kg
3.5 N
Can energy be created or destroyed?
No
Yes
Extra credit:
What is one famous scientist that we learned about and what were their contributions? (Worth 5 points)
