Atest car travels in a straight line along the x-axis. the graph in the figure shows the car’s position x as a function of time. at which point is the velocity zero?

The instantaneous velocity is zero at point and .

Further Explanation:

The velocity of an object in motion at a specific time and at specific point is termed as instantaneous velocity. Along a path of motion the given points can be separated by some finite distance.

Concept:

The expression for the instantaneous velocity is:

Here, is the velocity, is the initial position, is the final position, is the final time and is the initial time.

For instantaneous velocity at point :

Substitute for , for , for and for in the above equation.

For instantaneous velocity at point :

Substitute for , for , for and for in the above equation.

For instantaneous velocity at point :

Substitute for , for , for and for in the above equation.

For instantaneous velocity at point :

Substitute for , for , for and for in the above equation.

For instantaneous velocity at point :

Substitute for , for , for and for in the above equation.

For instantaneous velocity at point :

Substitute for , for , for and for in the above equation.

For instantaneous velocity at point :

The instantaneous velocity is , because slope at on the curve at point is parallel to the time axis.

Therefore, the instantaneous velocity is zero at point and .

Learn more:

1. Describe velocity

2. Average velocity

3. Difference between speed and velocity

Answer Details:

Grade: Middle school

Subject: Physics

Chapter: Kinematics

Keywords:

Test, car travels, straight, line, x-axis, graph, figure, shows, position, function, time, velocity, zero, point C and G.

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000