Join the movement
The impulse when a baseball is hit with a bat by a force of magnitude 2,361 N for 0.013 s
30.7 N s
Action-Reaction forces __________ act on the same object
never
Work is done when ...
an object is made to move
The magnitude of an electric field at a point 2.25 meters away from 0.21 C charge
3.73 x 108
Two billiard balls collide
Elastic
The magnitude of a 0.24 kg baseball pitched with a velocity of 40 m/s and is then batted to the pitcher with a velocity of 62 m/s.
24.48
A seatbelt stops you from hitting the windshield if you hit the brakes quickly.
Newton's First Law
A 25 kg child sits at the top of a 2.0 meter high slide. The child has __________ joules of potential energy.
490
The resistance (R) when voltage is 126V and current is 4 Amps
31.5 ohms
A student drops a bouncy ball and it bounces off the ground and back to her hand.
Elastic
A shuttle bus slows down with an average acceleration of -1.8 m/s2. How long does it take the bus to slow from 9.0 m/s to a complete stop?
5.0 s
All known fundamental forces
field forces
A 28 kg dog runs at a velocity of 2.3 m/s. How much kinetic energy does the dog have?
74
Calculate the force between 0.0007 C charge and a 0.0007 C charge 8 meters apart.
69
A boy whose mass is 64.6 kilograms runs at 10.6 meters per second and jumps onto a 7.5-kilogram stationary sled. The boy slides on the sled over a horizontal, frictionless surface at a speed of:
9.5
A change in velocity during a time interval
acceleration
A measure of inertia
mass
When you toss a ball up into the air, as it goes up, its potential energy is increasing
True
An ohm is the unit of measure
resistance
A lump of clay with a mass 38 kg moving at 17.6 m/s rolls toward another 22 kg lump of clay at rest along a frictionless surface. If the two lumps stick together when they collide, how fast will they be moving after the collision.
11.1
The speed of a cheetah running 300 yards in 10 seconds
30 yards per second
The part of the arrow telling us which way the force is acting
direction
A roller coaster cart has 1,463 J of kinetic energy at the bottom of the first hill. At the top of the second hill it has 697 J of potential energy. Assuming no energy is lost to friction, how much kinetic energy does the roller coaster cart have at the top of the second hill?
766.0
The B in the formula F = B I L
magnetic field strength
The formula for an inelastic collision
M1V1+M2V2=(M1+M2)Vf