Kinetic and Potential Energy
Stored Energy or energy to position is known as____________energy.
Potential Energy
Almost all energy on Earth comes from the _____ ?
Sun
Frank drove from Boston to Southern California at 40 mph. What is his velocity?
40 mph South West.
An object has a mass of 5 kg. What force is needed to accelerate it at 6 m/s2? (Formula: F=ma)
30 N
the matter that a wave moves through
medium
The formula for calculating potential energy is________.
GPE= M x G x H
What happens in terms of energy when a moving car hits a parked car, causing the parked car to move?
The moving car transfers kinetic energy to the parked car.
Burt was driving at 35 mph before he reached a red light. In three seconds he was at 10 mph. What was his acceleration?
8.3/mph/s. acceleration = change in velocity/time
35mph - 10mph (change in velocity)/3 sec
A force of 5 N accelerates an object. The object's mass is 50 g. What is the acceleration of the object? (Formula: F=ma)
100m/s2
waves that must have a medium
mechanical
The three factors that determine the amount of potential energy in an object are ___________, ________ and __________.
1. mass
2. Gravity
3.Height
Which activity directly converts energy from the Sun into chemical energy?
a bean plant making its own food to grow
Someone drove 180 miles in 4 hours what was this persons speed?
45mph. speed = distance/time 180 miles/4 hrs.=45mph
When discussing Newton's laws of motion, which terms do people most likely use when talking about Newton's third law of motion?
"action" and "reaction"
waves that do not need a medium
nonmechanical
Potential energy is measured in units of______.
Joules
As a person pushes a box across a floor, the energy from the person's moving arm is transferred to the box, and the box and floor become warm. During this process, energy is ____________ .
Conserved
Sarah is running at 10 m/s North. She then turned West. Did her velocity change?
Yes to 10 m/s West.
According to Newton's second law of motion, what is force equal to?
mass times acceleration
Waves in which the medium moves at right angles to the wave direction
transverse waves
Mass must be measured in units of______.
Kg
When a person strikes and lights a match, potential energy in the match is transformed into which types of energy?
thermal and radiant
A man drove 560 miles in 10 hours what is his speed?
56 mph speed = distance/time 560miles/10 hrs
A cart accelerates at 2 m/s2 when a force of 60 N is applied. What is the mass of the cart? (Formula: F=ma)
30 kg
the highest point of the wave
crest