The trajectory (or path) of a projectile is_________________?
A. straight line
B. parabola
C. hyperbola
D. circle
Physics Mcqs
The distance covered by a body in time t starting from rest is__________________?
The distance covered by a body in time t starting from rest is__________________?
A. at2/2
B. Vt
C. a2t/2
D. at2
When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are________________?
When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are________________?
A. 5m/s, 1m/s
B. 3m/s, 3m/s
C. 6m/s, 1m/s
D. 4m/s, 2m/s
The thrust on the rocket in the absence of gravitational force of attraction is__________________?
The thrust on the rocket in the absence of gravitational force of attraction is__________________?
A. Constant
B. not constant
C. constant if the rate of ejected gases is constant
D. constant for short range rocket.
Which of the following is not an example of projectile motion ?
Which of the following is not an example of projectile motion ?
A. a gas filled ballon
B. bullet fired from gun
C. a football kicked
D. a base ball shot
The acceleration in the rocket at any instant is proportional to the nth power of the velocity of the expelled gases. Where the value of n must be ?
The acceleration in the rocket at any instant is proportional to the nth power of the velocity of the expelled gases. Where the value of n must be ?
A. -1
B. 1
C. 2
D. -2
When collision between the bodies in a system is inelastic in nature then for system ____________________?
When collision between the bodies in a system is inelastic in nature then for system ____________________?
A. momentum changes but K.E remain conserve
B. K.E changes but momentum remain conserve
C. both momentum and K.E changes
D. both momentum and K.E remain conserve
A body is falling freely under gravity. How much distance it falls during an interval of time between 1st and 2nd seconds of its motion, taking g=10 ?
A body is falling freely under gravity. How much distance it falls during an interval of time between 1st and 2nd seconds of its motion, taking g=10 ?
A. 14 m
B. 20 m
C. 5 m
D. 25 m
During long jump, athlete runs before taking the jump. By doing so he__________________?
During long jump, athlete runs before taking the jump. By doing so he__________________?
A. provide him a larger inertia
B. decreases his inertia
C. decreases his momentum
D. increases his momentum
Motorcycle safety helmet extends the time of collision hence decreasing the________________?
Motorcycle safety helmet extends the time of collision hence decreasing the________________?
A. chance of collision
B. force acting
C. velocity
D. impulse