What is the angle of projection for which the range and maximum height become equal ?
A. tan-1 ¼
B. tan-1 4
C. tan-1 ½
D. tan-1 2
A. tan-1 ¼
B. tan-1 4
C. tan-1 ½
D. tan-1 2
A. 4.9 m
B. 19.6 m
C. 39.2 m
D. 44.1 m
A. second law of motion
B. third law of motion
C. first law of motion
D. law of gravitation
A. 45
B. 60
C. 30
D. none
A. force
B. impulse
C. velocity
D. both A and C
A. due to their shape
B. due to air resistance
C. due to angle of projection
D. all of these
A. speed changes
B. acceleration changes
C. direction of motion changes
D. displacement from origin changes
A. acceleration is const
B. acceleration is variable
C. acceleration is zero
D. velocity is zero
A. acceleration
B. distance
C. force
D. momentum
A. 1st law
B. 2nd law
C. 3rd law
D. all 1st, 2nd and 3rd laws