30 Questions
What is the significance of the larger value of t in the context of the body's motion?
It is the total time taken by the body to reach the highest point and then come back to the starting point
What is the condition when the particle returns to the starting point?
h = 0
What is the time of flight of the particle?
2u/g
What is the distance travelled by the stone in 5 seconds?
25g
What is the remaining distance travelled by the stone after 3 seconds of its fall?
8g
What is the unit of power that is equivalent to 107 ergs per second?
1 watt
What is the kinetic energy of a body measured by?
The work done by the body
If a bowler throws a bumper with a speed of 24 m/sec, and the ball loses its energy by 1.5 kgm when it touches the ground, what is the ball's speed when it hits the bat?
2.22 m/sec
What is the ratio of the kinetic energies of two bodies of masses m and 4m moving with equal momentum?
4 : 1
What is the horsepower equivalent to in watts?
746 watt
What is the formula for the potential energy of a body?
P.E. = mgh
What is the kinetic energy of the ball before it touches the ground?
7.17 kgm
What is the velocity of the ball at which it hits the bat?
22.2 m/s
What is the ratio of the increase in kinetic energy in the mth and (m+1)th second?
2m-1 : 2m+1
What is the formula for the kinetic energy of an object?
K.E. = 1/2mv^2
What is the direction of the actual velocity of the rain with respect to the direction of motion of the man?
60°
What is the relative velocity of the second particle with respect to the first particle after a time t?
f t + u cos α
What is the acceleration of a particle moving in a straight line with uniform acceleration?
Constant acceleration
What is the velocity of a particle after time t, if it starts with initial velocity u and moves with constant acceleration f?
u + f t
What is the condition for the particle to return to the starting point in a rectilinear motion with uniform acceleration?
v = 0
What is the velocity of a particle after time t, if it starts with an initial velocity u and accelerates with a constant acceleration f?
u + ft
If a particle moves in a straight line with initial velocity u and constant acceleration f, what is the distance travelled in t seconds?
ut + ft^2/2
A body is moving in a straight line with uniform acceleration. If it covers distances of 10 m and 12 m in the third and fourth seconds respectively, what is its initial velocity?
5 m/sec
What is the average velocity of a particle moving in a straight line with uniform acceleration, over a period of time t?
u + v/2
If a particle moves in a straight line with initial velocity u and decelerates with a constant acceleration f, what is its velocity after time t?
u - ft
What is the acceleration of a body projected vertically upward?
-g
What is the velocity of a body after time t, if it is projected vertically upward with an initial velocity u?
u - gt
What is the time taken by a body to reach the greatest height, if it is projected vertically upward with an initial velocity u?
u / (2g)
What is the equation of motion for the distance of a body projected vertically upward with an initial velocity u?
h = ut - gt^2 / 2
What is the condition for a body to reach a given height, if it is projected vertically upward with an initial velocity u?
u^2 >= 2gh
Test your understanding of physics concepts such as work, energy, and momentum. This quiz covers topics like units of work, types of energy, and the relationship between momentum and kinetic energy.
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