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Science MCQs

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Question 971 Hard

A force of 1 N is approximately equal to the weight of a:

A
Apple
B
Car
C
Book
D
Person
Question 972 Hard

What is the net force on a skydiver falling at constant terminal velocity?

A
Zero
B
Equal to her weight
C
Greater than her weight
D
Less than her weight
Question 973 Hard

Which of the following is TRUE about displacement?

A
It can be greater than distance.
B
It is always equal to distance.
C
It is a vector quantity.
D
It is always positive.
Question 974 Hard

The rate of change of displacement is called:

A
Speed
B
Acceleration
C
Velocity
D
Force
Question 975 Hard

A car travels at 60 km/h for 1 hour and at 40 km/h for the next 2 hours. What is the total distance traveled?

A
100 km
B
120 km
C
140 km
D
160 km
Question 976 Hard

What is the essential condition for a force to do work on an object?

A
The object must be heavy.
B
The object must move in the direction of the force.
C
The force must be large.
D
The object must be on Earth.
Question 977 Hard

The inertia of an object is directly related to its:

A
Volume
B
Speed
C
Mass
D
Acceleration
Question 978 Medium

The value of acceleration due to gravity (g) on Earth is approximately:

A
1.6 m/s²
B
5 m/s²
C
9.8 m/s²
D
20 m/s²
Question 979 Medium

A force can change the ______ of motion of an object.

A
Mass
B
Volume
C
Direction
D
Composition
Question 980 Medium

What is the weight of a 5 kg object on Earth? (g=10 N/kg)

A
0.5 N
B
2 N
C
5 N
D
50 N
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