CAS Review 1 Question Preview (ID: 14268)
DCCAS Review.
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Which is not a a form of energy?
a) air
b) heat
c) light
d) sound
Which of these best describes why heat is produced when a flashlight is turned on?
a) Heat is converted to light by the battery when the flashlight is turned on
b) Heat is produced from the excess light that escapes when the flashlight is turned on
c) Heat is a produced of the enrgy transformation that occurs when the flashlight is turned on
d) Heat is created by the battery and some of htat heat is used to produce lgiht for the flashlight
Which of these properties can be used to classify the different type sof radiation given off by the sun?
a) amplitude
b) pitch
c) speed
d) wavelength
Which of these best decribes an example of kinetic energy?
a) Throwing a pencil across the room
b) Sitting in your chair
c) A diver standing on a platform
d) A battery making a flashlight light up
Dajon dropped a ball. The ball counced back up, but not as high Which of these best describes why the ball did not bounce to the orginal height?
a) Some of the balls energy was destroyed as the ball fell to the ground
b) Some of the balls energy was eliminated when the ball struck the ground
c) Some of the balls energy was converted to another form when the ball struck the ground
d) Some of the balls energy was used to increase the speed of the ball as it fell to the ground
What force must be applied to a box weighting 5 kilograms to achieve an acceleration of 10m/s2
a) 25 N
b) 50 N
c) 55 N
d) 100 N
Michael and Sean are palying tug-0f-war. Michael pulls 50 newtons and sean pulls 60 newtons. What is the force of the rope?
a) 10 N towards Sean
b) 10 N towards michael
c) 110 N toward Sean
d) 110 N toward Michael
A force of 15 newtons is exerted on a object causing it to accelerate at 5 meters per second squared. What is the mass of the object?
a) 3 kilograms
b) 10 kilograms
c) 20 kilograms
d) 75 kilograms
A force is applied to a box that causes the box to move across the floor wiht a constant acceleration. What will happen if double the force is applied to the box with the same mass
a) The second box will have zero acceleration
b) The secon dbox will have half the acceleratino of the first box
c) The second box will have the same acceleration as the first box
d) The secon dbox will have twice the acceleration of the first box
If the force acting on a car in motion were unbalanced, any of these could happen except
a) The speed of the car might increase
b) The car might change its direction of travel
c) The speed of the car might decrease until it stops
d) The car might continue at the same speed and direction
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