Deck 1: Physics Force, Acceleration, and Projectile Motion

Question 1

Only force acting on a bouncing ball is

A)gravity
B)weight of ball
C)friction
D)a and b both

Answer 1

a and b both

Question 2

Accelerometer detects the

A)small acceleration
B)large acceleration
C)small deceleration
D)large acceleration and deceleration

Answer 2

large acceleration and deceleration

Question 3

If the gradient of a graph is negative, then the acceleration is

A)positive
B)negative
C)zero
D)1

Answer 3

negative

Question 4

If a student drops a stone from a cliff of height 30 m and the time it takes to reach the ground is 2.6 s, then the acceleration due to gravity is

A)9ms^-2
B)10ms^-2
C)4ms^-2
D)8.8ms^-2

Question 5

Gradient of line of velocity-time graph is tells us the

A)velocity
B)acceleration
C)distance
D)time

Question 6

A stone is thrown upwards with initial velocity of 20ms^-1, the height that stone will reach would be

A)20 m
B)30 m
C)40 m
D)50 m

Question 7

Projectile will attain its maximum range, if it is fired at an angle of

A)30°
B)47°
C)90°
D)45°

Question 8

Horizontal component of a bouncing ball is

A)affected by gravity
B)unaffected by gravity
C)affected by weight
D)affected by contact force

Question 9

When ball having a projectile motion is rising up, it

A)decelerates
B)accelerates
C)rises up with constant acceleration
D)acceleration becomes zero

Question 10

Equation of motion can be used for

A)straight line motion only
B)curved motion only
C)motion along the circular path
D)all types of motion

Question 11

Acceleration of free fall depends on the

A)surface
B)weight of object
C)distance from center of Earth
D)size of object

Question 12

If initial velocity of an object is zero, then distance covered by it in time t and acceleration of 9.8ms^-2 would be

A)2.9t²
B)3t²
C)4t²
D)4.9t²

Question 13

As the ball falls towards the ground, its velocity

A)increases
B)decreases
C)remains constant
D)becomes zero

Question 14

Gradient of velocity-time graph tells us about object's

A)velocity
B)displacement
C)distance
D)acceleration

Question 15

An object whose velocity is changing is said to be in a state of

A)acceleration
B)rest
C)equilibrium
D)Brownian motion

Question 16

Acceleration of train when it is moving steadily from 4.0ms^-1 to 20ms^-1 in 100s is

A)1ms^-2
B)2ms^-2
C)0.16ms^-2
D)3ms^-2

Question 17

If we get a straight line with positive slope then its acceleration is

A)increasing
B)decreasing
C)zero
D)constant

Question 18

If a spinster staring from rest has acceleration of 5ms^-2 during 1st 2.0s of race then her velocity after 2 s is

A)20ms^-1
B)10ms^-1
C)15ms^-1
D)5ms^-1

Question 19

Horizontal distance traveled by a ball if it's thrown with initial velocity of 20ms^-1 at an angle of 30° is

A)24 m
B)56 m
C)35.3 m
D)36.3 m

Question 20

If a car starting from rest reaches a velocity of 18ms^-1 after 6.0 s then its acceleration is

A)1ms^-2
B)2ms^-2
C)3ms^-2
D)4ms^-2

Question 21

A train travelling at 20ms^-1 accelerates at 0.5ms^-2 for 30 s, the distance travelled by train is

A)825 m
B)700 m
C)650 m
D)600 m

Question 22

If a secondary coil has 40 turns, and, a primary coil with 20 turns is charged with 50 V of potential difference, then the potential difference in the secondary coil would be

A)50 V in secondary coil
B)25 V in secondary coil
C)60 V in secondary coil
D)100 V in secondary coil

Question 23

Generators at a power station produce electric power at voltage

A)45 kW
B)50 kW
C)60 kW
D)25 kW

Question 24

Equation which measures alternating voltage is

A)Vsin ω
B)sin t
C)Vo sinωt
D)V=IR