What will be the acceleration of a bus whose speed increases from 60 m/s to 100 m/s in 5s?
8 m/s 2
Acceleration is the change in velocity divided by elapsed time: \(a=\frac{v-u}{t}=\frac{100-60}{5}=8\text{ m/s}^2\).
Important Questions from Motion in Two and Three Dimensions
A running truck at 54 km/hr is bought to rest in 10s. The distance travelled by the truck in 10th second is:
A cage in a mine-shaft descends with 2 ft/s2 units of acceleration. After it has been in motion for 10 seconds a particle is dropped on it from the top of the shaft with 32 ft/s2. What time elapses before the particle hits the cage?
An object is launched horizontally from a height of 45 m above the ground with a speed of 10 m/s. The time at which the object will hit the ground is : (Take g = 10 m/s2)
A car starts from Bengaluru, goes 50 km in a straight line towards south, immediately turns around and returns to Bengaluru. The time taken for this round trip is 2 hours. The magnitude of the average velocity of the car for this round trip
- Motion along a curved path and confined to one plane is known as ________.
