In which of the following cases the speed of a body in straight line motion may increase ?

Velocity and force both are in -x direction

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Force in -x direction and velocity in +x direction

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Velocity in -x direction and fprce in +x direction

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All of these

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Solution

The correct option is A Velocity and force both are in -x direction
$The speed of a body in straight line motion may increase when the velocity and the force are in -x direction$

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Similar questions

Column I	Column II
A. Initial velocity > 0	P. Particle may move in +ve X direction with increasing speed
B. Initial velocity < 0	Q. Particle may move in +ve X direction with decreasing speed
C. X > 0	R. Particle may move in -ve X direction with increasing speed
D. X < 0	S. Particle may move in -ve X direction with decreasing speed

All the curves in Column 1 are parabolic and those in Column 2 and Column 3 are straight lines.

‘x’, ‘v’ and ‘a’ denote position, velocity and acceleration of a particle and consider positive in the direction of increasing ‘x’.

Which of the following options is the only INCORRECT combination?

m

All the curves in Column 1 are parabolic and those in Column 2 and Column 3 are straight lines.

‘x’, ‘v’ and ‘a’ denote position, velocity and acceleration of a particle and consider positive in the direction of increasing ‘x’.

In which one of the following options the particle starts with positive velocity and crosses the origin with negative velocity?

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