Frames of Reference
Trending Questions
Which one of the following is not an example of projectile?
A kicked football.
Taking off of an aircraft.
A bullet fired from a gun.
A javelin thrown by an athlete.
Assertion: A reference frame attached to earth is an inertial frame of reference.
Reason: The reference frame which has zero acceleration is called a non-inertial frame of reference.
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.
If Assertion is true but Reason is false.
If the Assertion and Reason both are false.
If Assertion is false but Reason is true.
A ball P is dropped vertically and another ball Q is thrown horizontally with the some velocity from the same height and at the same time. If air resistance is neglected, then
Ball P reaches the ground first
Ball Q reaches the ground first
Both reach the ground at the same time
The respective masses of the two balls will decide the time
Rain is falling vertically with a speed of 30ms−1. A woman rides a bicycle with a speed of 10ms−1 in the north to south direction. What is the direction in which she should hold her umbrella ?
Two trains one of length 100 m and another of length 125 m, are moving in mutually opposite directions along parallel lines, meet each other, each with speed 10 m/s. If their accelerations are 0.3m/s2 and 0.2m/s2 respectively, then the time they take to pass each other will be
5 sec
10 sec
15 sec
20 sec
1. Mass
2. Distance between two points
3. Velocity
4. Distance
- 1 and 2
- 2 and 3
- 1 and 4
- 1 and 3
(a) xA < xB
(b) xA = xB
(c) xA > xB
(d) the information is insufficient to decide the relation of xA with xB.