Physics
A car travels the first th part of its total distance with a speed v1, and the remaining th of the distance with speed v2. Its average speed is : 1. 2. 3. 4.
Related Questions
A body when projected up with an initial velocity u goes to a maximum height h in time t and then comes back at the point of projection. The correct statement is —
- The average velocity is 2h/t
- The acceleration is zero
- The final velocity on reaching the point of projection is 2u
- The displacement is zero
Identify the correct statement from the following :
The average speed of a body can be zero even if it's average velocity is not zero.
Speed and velocity both are scalar quantities.
The magnitude of velocity of a body in motion is its speed.
Speed and velocity can be positive or negative depending upon the direction of motion.
State whether the following quantity is a scalar or vector?
(a) Pressure
(b) Force
(c) Momentum
(d) Energy
(e) Weight
(f) Speed
Write the parameters required to express a scalar quantity.