A particle is travelling with a constant speed. This means that
its position remains constant as time passes
it covers equal distances in equal time intervals
its acceleration is zero
it does not change its direction of motion
A particle is pushed along a horizontal surface in such a way that it start with a velocity of 12m/s and decreases at the rate of 0.5 m/s2. The time it will take to come to rest is:
42s
48s
24s
84s
A bus increases its speed from 20km / h to 50km / h in 10seconds. Its acceleration is:
30m / s2
3m / s2
18m / s2
0.83m / s2
Unit of Angle is
Candela
Weber
Radian
Lux
Suppose a man starts from place A and travels a distance of 5km to reach place B. From place B he travels another 3km and reaches place C. And finally the man travels 4 km from place C to reach to the starting point. The figure is shown below: In this case, what is the final displacement of the man?
12km
60km
zero
None of these
What is the acceleration of a particle moving with uniform velocity?
1 ms-2
2 ms-2
0
∞
Name the instrument which is used to measure the distance traveled by a car.
Speedometer
Odometer
Altimeter
Rheometer
The velocity of a car at 10.50 a.m is 60 km/hr and at 10.52 a.m. it is 80 km/hr. Assuming constant acceleration in the given period its value is
600 km/hr2
500 km/hr2
400 km/hr2
300 km/hr2
The rate of change of displacement is:
Speed
Velocity
Acceleration
Retardation
The position of a particle going along a straight line is x1 = 50 m at 10.30a.m. and x2 = 55 m at 10.35 a.m.The displacement between 10.30 a.m and 10.35 a.m. is :
2 m
5 m
7 m
9 m
