Can someone help me/check with this work?
1. _______ is the rate of change of position.
A.Speed*****
B.Velocity
C.Acceleration
D.Deceleration
2. Which of the following is the difference between speed and velocity?
A. direction*****
B.units
C.speed
D.none of the above
3.A planet is discovered that is the same size as earth and has the same gravitational acceleration but has twice its mass. If you weighed 700 N on earth, how much would you weigh on the new planet?
A.350N
B. 700N
c.1,400N****
D. 2,800N
4.every force has a(n)____ force, which is measured in ______.
A.reaction;joules
B.long-range;meters
C.opposite; Newtons*******
D.Accelerating; m/s(to the power of 2)
5. you throw a ball into the air. As the ball leaves your hand, the force(s) acting on the ball are:
A.Gravity
B.your hand
C.balanced
D. both gravity and your hand*****
6.which of the following is how force is similar to displacement and velocity?
A.Requires measurement
B.indicates velocity
C.can describe motion****
D. all of the above
7.In every energy transformation, some energy is always "lost" in the form of ______ energy.
A.Chemical
B.radiant
C.electrical
D.thermal****
8. In a nuclear power plant, nuclear energy is first converted into what type of energy?
A.electrical
B.thermal
C.chemical****
D.radiant
9.a generator is a device that produces which type of energy conversion?
A.kenetic to electrical*****
B.electrical to kinetic
C.kinetic to thermal
D.thermal to kinetic
10.a limiting factor for using nuclear energy is the ____ produced.
A.flooding
B.pollution
C.waste*****
D.heat
2 answers
1 answer