Science
9th Grade
NGSS covered
Used 3K+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When a body falls freely towards the earth, then its total energy
(a) increases
(b) decreases
(c) remains constant
(d) first increases and then decreases
Tags
NGSS.MS-PS3-2
NGSS.MS-PS3-5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process the potential energy of the car
(a) does not change
(b) becomes twice to that of initial
(c) becomes 4 times that of initial
(d) becomes 16 times that of initial
Tags
NGSS.MS-PS3-2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In case of negative work the angle between the force and displacement is
(a)
(b)
(c)
(d )
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass is 3.5 kg. Both spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same
(a) acceleration
(b) momenta
(c) potential energy
(d) kinetic energy
Tags
NGSS.MS-PS3-2
NGSS.MS-PS3-5
NGSS.MS-PS3-1
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. The work done against the gravitational force will be (g =10 m s–2)
J
J
0.6 J
zero
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which one of the following is not the unit of energy?
(a) joule
(b) newton metre
(c) kilowatt
(d) kilowatt hour
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The work done on an object does not depend upon the
(a) displacement
(b) force applied
(c) angle between force and displacement
(d) initial velocity of the object
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