physics
In a parking lot, a car bumps into another car traveling in the same direction. Their fenders lock together and for a short time, they travel together. You could have determined the cars' velocity by using this formula _____.
m1v1+ m2v2= m1v1+ m2v2
An object's _____ energy that is used to perform work is equal to its potential energy plus its kinetic energy.
mechanical
If A car accidentally went off the third floor of a parking garage, it would accelerate towards the ground due to the force of _____.
momentum
If a car were to veer off the road and hit a sign, it would cause much damage because with a a mass of 1,500 kg and a velocity of 110 kph it means that it has a high _____.
momentum
If you need to find momentum you would use _____.
p=mv
A projectile follows a _____ path, a curve that resembles a bell.
parabolic
When a force held against the object is released, the potential energy is converted into _____ energy.
potential
The best definition of _____ is the measure of energy stored in an object that is held against force.
potential energy
The amount of work done to raise a load 5 meters in 25 seconds is equal to the _____ necessary to perform that task.
power
"B" points to the object's _____.
radius
The tire and the axles it is attached to tend to remain in rotation due to _____. That is why you need brakes on a car to stop the tires' rotating motion.
rotational inertia
The speed at which the sticky note follows the rotation around the tire's axis is the sticky note's _____.
rotational speed
"C" points to the _____ line the sticky note would follow if it became unattached.
tangent
The speed which the sticky would have if it became unattached during the tire's rotation is the _____.
tangential speed
A car's velocity was computed by _____.
v=d/t
Since a car's velocity, acceleration, and momentum involve direction, they are all _____ quantities.
vector
The statement "A car is moving at 63 kph northwest" describes the car's _____.
velocity
A parabolic trajectory has two vectors: _____ and _____.
vertical, horizontal
The amount of force needed to raise a load 5 meters is equal to the _____ required to perform the task.
work
A car and a SUV are involved in an accident. They both had momentum prior to the collision. After the collision, the _____ momentum is the vector sum of the momentum of the two vehicles.
zero
(Triple points) A bowling ball with a mass of 7.1 kg has a velocity of 5 ft/s. It hits a bowling pin with a mass of 1.53 kg. If the bowling ball and the pin move together after the collision, what is the velocity?
4.1 m/s
A car's acceleration may be expressed in _____.
7 kph/s
The sun rotates once in 25.05 days. That is 601.2 hours. So the sun's rotational speed is 0.0017 rotations per hour. What is the tangential velocity of a sunspot?
7,429 km per hour
To determine the rotational inertia of an object, you would use _____.
I=Md2
To figure out the gravitational force between a research sphere floating upon the ocean and the earth, you would use the formula _____.
F=m1m2
The definition of the term torque is _____.
an outside force that is applied to an object making the object change its rotational inertia
The rate of rotation of a tire suddenly increases. There is a sticky note on it and it also increases in speed. Another way of saying this is that the sticky note's _____ acceleration increases. The formula for centripetal acceleration is ac=vt2r
centripetal
"A" points to the object's _____.
circumference
To calculate the time it would take for a ball to fall from the floor to the street, you would use the formula _____.
d=1/2 gt
A car traveling at 60 kph collides with SUV that was traveling at 27 kph in the opposite direction. The two vehicles bounce of each other and move away in opposite directions. Their collision is _____.
elastic
The force of _____ causes an acceleration at the rate of 9.8 m/s2 or 32 ft/s2.
gravity
In olden times, power was measured in _____, or the amount of work a draft horse could complete in one minute, an amount equal to 746 watts.
horsepower
If the momentum of car changes, it is due to _____.
impulse
In a parking lot, a Ford Mustang bumps into a Mini Cooper traveling in the same direction. Their fenders lock together and for a short time, they travel together. This collision is _____.
inelastic
Centripetal force pulls a mass out of its _____.
inertial path