Definitions
The type of energy a moving object has.
What is kinetic energy?
Unit for force.
What is Newton?
The two types of mechanical energy.
What are kinetic and potential energy?
The effect on an object's momentum if the applied force on it is increased.
What is increased?
What is one word to describe current?
What is "flow"?
The meaning of the delta (triangle) symbol.
Unit for work.
What is Joule?
A 0.35 kg can of soup is moved from a shelf that is 1.2 m high to one that is 0.4 m off the ground. What is the change in its potential energy?
What is -2.744 Joules?
True or False: Whenever objects collide in the absence of external forces, the net momentum of both objects before the collision does not equal the net momentum of both objects after the collision.
What is false?
The equivalent resistance of resistors in series is...
What is "the sum of all the resistors."
Change in momentum is also called this.
What is impulse?
Unit for momentum.
Positive work is done when a ____ acts on an object and the object moves in the direction of the _____.
What is "force" and "force"?
The reason for why airbags reduce force is....
What is "the contact time is increased."
Symbolized on a circuit diagram by a set of parallel lines, one short and one long.
What is a battery?
What are momentum and kinetic energy?
Unit for energy.
What is Joule?
A wagon is sitting still on the ground when 100 J of work go into moving it. The wagon has a mass of 15 kg. How fast does it end up moving?
What is 3.65 m/s?
A 0.25 kg ball rolling at 1 m/s rolls and overtakes a 0.3 kg ball rolling in the same direction at 0.5 m/s. The balls stick together on impact. What is the velocity of the two balls after the collision?
What is 0.73 m/s?
A 12 V battery is connected to a circuit that has 3 resistors. Two resistors are connected in parallel, they have resistances of 4 ohms and 6 ohms. These are then connected in series with a 2 ohm resistor. What is the total resistance in the circuit?
What is 4.4 ohms?
The difference between series and parallel circuits.
What is the current has multiple paths to choose from in parallel but only one in series?
Unit for impulse.
A 20 kg sled starts from rest on flat ground. A person does 300 J of work pulling the sled. After moving forward, the sled climbs a small hill and gains 120 J of gravitational potential energy. How fast is the sled moving?
What is 4.24 m/s?
A 5 kg puppy running at 2 m/s picks up a 1 kg stick that is sitting on the ground. What is the momentum of the puppy and stick after the puppy picks up the stick?
What is 10 kg x m/s?
The current flowing through a 9 Volt battery that powers three 6 ohm resistors in parallel.
What is 4.5 Amps?