Physics
Vectors and Equilibrium
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#153 The angle of a vector is usually measured from the:
A) Negative x-axis
B) Positive x-axis
C) Negative y-axis
D) Positive y-axis
#154 A body is moving with uniform velocity. Its
A) Speed changes
B) Acceleration changes
C) Direction of motion changes
D) Displacement from origin changes
#155 Which law of motion is also called law of inertia?
A) 1st law
B) 2nd law
C) 3rd law
D) All 1st, 2nd and 3rd law
#156 Momentum depends upon
A) Force acts on the body
B) Mass of the body
C) Velocity of the body
D) Both mass and velocity of the body
#157 Motorcycle safety helmet extends the time of collision hence decreasing the
A) Change of collision
B) Force acting
C) Velocity
D) Impulse
#158 At maximum height on trajectory which of projectile becomes zero
A) Acceleration
B) Velocity
C) Vertical velocity
D) Horizontal velocity
#159 When car takes turn around a curve road, the passengers feel a force acting on them in a direction away from the center of the curve. It is due to
A) Centripetal force
B) Gravitational force
C) Their inertia
D) Centrifugal force
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