Momentum
The difference between inertia and momentum is that object can only have momentum if...
What is "the object is moving"?
A car experiences 110 newtons*seconds. The change in momentum of the car is...
What is "110 N*s or kg*m/s"?
In terms of collisions, the Conservation of Momentum states...
What is "total momentum before the collision = total momentum after collision"?
If an object is accelerating, the object is NOT:
A. speeding up in a straight line path
B. slowing down in a straight line path
C. traveling at constant speed in a straight line path
D. turning in a circular path
What is "C. traveling at constant speed in a straight line path"?
An object is in equilibrium if the forces...
What is "are balanced"?
If an object is moving north, the direction of the momentum is...
What is "north"?
If the force acting on an object triples, the impulse acting on the object changes by a factor of...
This is the formula form of the conservation of momentum used for (almost) all collision problems.
What is "m1v1 + m2v2 = m1v1 + m2v2"?
If an object is falling freely, the magnitude of the acceleration is...
What is "9.81 m/s2"?
Centripetal means _____________ which means a and F in circular motion point ___________.
What is "center seeking" and "point to the center"?
One of the following has the greatest momentum:
A. a 100-kg athlete jogging at 2.5 m/s
B. a 28-kg child riding a bike at 6 m/s
What is "A. a 100-kilogram athlete jogging at 2.5 m/s"?
This is the formula form of the conservation of momentum used specifically for when objects stick together.
What is "m1v1 + m2v2 = m3v3"?
As time passes, the horizontal speed in a projectile launched horizontally...
A. increases
B. decreases
C. remains the same
What is "C. remains the same"?
TRUE OR FALSE: the mass and weight represent the same thing.
What is "FALSE"?
The velocity of a 20 kg object moving with a momentum of 200 kg m/s is...
What is 10 m/s?
A 25 kg object starts from rest and experiences an impulse of 200 N*s. The final velocity the car reaches after this impulse is...
What is "8 m/s"?
A 2.5-kilogram block is moving at 3 meters per second to the right collides with a 1.5-kilogram block at rest. After the collision, the 2.5-kilogram block moves at 1.75 meters per second to the right. The magnitude of the velocity of the 1.5-kilogram block after is...
What is "2.08 m/s"?
A ball falls from rest and travels 15 meters. Calculate the time to reach 15 meters.
What is "1.75 seconds"?
If the distance between two planets is halved, the gravitational force of attraction is affected by a factor of...
What is "4"?
One the following has more inertia:
A. a 100-kg athlete jogging at 2.5 m/s
B. a 28-kg child riding a bike at 6 m/s
What is "A. a 100-kg athlete jogging at 2.5 m/s"?
An object is moving west but is slowing down. The direction of the net force and impulse is...
What is "east"?
Calculate the impulse needed to change a 1 kg cart from a velocity of 2 m/s to a velocity of 4 m/s
What is "2 N*s or 2 kg*m/s"?
The time of flight for any projectile strongly depends on this kinematic quantity.
What is "the height or vertical displacement"?
An object of mass 2m, at an altitude equal to the Moon's radius, r, above the surface of the Moon, is attracted to the Moon with a gravitational force of...
A. F
B. 2F
C. F/2
D. F/4
What is "F/2"?