Both average velocity and average instantaneous velocity are equal when a body is moving with
A) uniform velocity in same direction
B) uniform velocity in different directions
C) uniform acceleration
D) none
1 Answers
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In case of a projectile, what is the angle between the instantaneous velocity and acceleration at the highest point?
Correct Option is (C) 90° In case of a projectile, what is the angle between the instantaneous velocity and acceleration at the highest point is 90°
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In case of a projectile, what is the angle between the instantaneous velocity and acceleration at the highest point?
2 Answers
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A body projected vertically upwards, reaches a height of 180 m. Find out `[g=10ms^(-2)]` (i) intial velocity of body (ii) time taken by body to reach
Correct Answer - (i)`60m//s` (ii) 6 sec (iii) 12 sec (iv )160 m (v)`-20m//s` (vi) 2 sec, 10 sec (vii) 6 sec
2 Answers 1 views
A 150 m long train is moving in north direction with a velocity of 5m/s and a parrot is also moving in north direction with a velocity of 10 m/s, then
Correct Answer - (i)`30sec (ii) 300m
2 Answers 1 views
A body is moving with uniform velocity of 50 km h^-1, the force required to keep the body in motion in SI unit is
Correct option is: (A) zero
2 Answers 2 views
A body is moving with initial velocity 30 m/s. After certain time it acquires velocity of 40 m/s, then the velocity in middle of its journey is
Correct option is A) 25√2
2 Answers 2 views
Assertion (A) : Speedometer of a vehicle reads instantaneous velocity
A) Both A and R are correct, R is correct explanation of A
2 Answers 1 views
A force of IN acts on a body of mass 5kg. The body covers 100 cm in 2 seconds moving along a straight line. The initial velocity is
D) 120 cm/sec
2 Answers 1 views
Time period of a body moving around a body of radius R, with velocity v is …………
A) T = \(\cfrac{2πR}v\)
2 Answers 1 views
A body of mass `2kg` moving on a horizantal surface with an initial velocity of comes to rest after `2` second. If one wants to keep this body moving
Correct Answer - C `v=u+at,F=ma`
2 Answers 1 views