Question
A projectile is fired at an angle θ and reaches maximum
height H and range R. The angle between velocity and acceleration at the highest point is:Solution
At the highest point of a projectile’s motion:
- The velocity is purely horizontal, since the vertical component becomes zero.
- The acceleration due to gravity is always vertically downward.
- Velocity vector → horizontal
- Acceleration vector → vertical (downward)
45, 125, 214, 312, 420, 535
- Find the wrong number in the given number series.
13, 24, 17, 28, 21, 40 Find the wrong no in the given number series.
2, 4, 8, 16, 33, 64
120, 139, 196, 291, 420, 595
79, 152, 231, 314, 405, 500
132, 130, 136, 126, 142, 110
Find the wrong number in the given number series.
76, 81, 96, 123, 156, 2011000, 200, 56, 24, 12, 7.2
P, Q and R invested their capitals in a business in the ratio 5:6:4 respectively. At the end of the year, they received profits in the ratio 10:18:8 res...
Find the wrong number in the given number series.
- 342, - 218, - 96, 27, 150, 273