The time taken by a block of wood (initially at rest) to slide down a smooth inclined plane 9.8 m long (angle of inclination is ) is:
1. | \(\frac{1}{2} \mathrm{sec} \) | 2. | \(2 ~\mathrm{sec} \) |
3. | \(4~ \mathrm{sec} \) | 4. | \(1~ \mathrm{sec} \) |
A particle starts from the origin at t = 0 sec with a velocity of and moves in the x-y plane with a constant acceleration of \((8.0\hat i +2.0 \hat j)\) \(\text{ms}^{-2}\). At what time is the x- coordinate of the particle 16 m?
1. | 2 s
|
2. | 3 s
|
3. | 4 s
|
4. | 1 s |
A particle starts from the origin at t = 0 with a velocity of 5.0î m/s and moves in the x-y plane under the action of a force that produces a constant acceleration of (3.0î +2.0 ĵ ) . What is the speed of the particle at the instant its x-coordinate is 84 m?
1. | 36 m/s | 2. | 26 m/s |
3. | 1 m/s | 4. | 0 m/s |