When is the acceleration $(i)$ positive $(ii)$ negative ?
When is the acceleration $(i)$ positive $(ii)$ negative ?
$(i)$ If the velocity of a body is increasing with respect to time, the acceleration is said to be positive.
$(ii)$ If the velocity of a body is decreasing with respect to time, the acceleration is said to be negative.
Similar Questions
In which of the following cases of motions, the distance moved and the magnitude of displacement are equal ?
In which of the following cases of motions, the distance moved and the magnitude of displacement are equal ?
The speed$-$time graph of a body is a straiaht line parallel to time axis. The body has
The speed$-$time graph of a body is a straiaht line parallel to time axis. The body has
Give examples to distinguish
$(i)$ Distance and displacement.
$(ii)$ Speed and velocity.
$(iii)$ Acceleration and retardation.
Give examples to distinguish
$(i)$ Distance and displacement.
$(ii)$ Speed and velocity.
$(iii)$ Acceleration and retardation.
Can the speed of a body be negative ?
Can the speed of a body be negative ?
The slope of the line on a position-time graph reveals information about an object's velocity. What conclusion can you draw regarding the motion of an object, if the graph is a
$(i)$ Horizontal line.
$(ii)$ Straight diagonal line.
$(iii)$ Curved line.
The slope of the line on a position-time graph reveals information about an object's velocity. What conclusion can you draw regarding the motion of an object, if the graph is a
$(i)$ Horizontal line.
$(ii)$ Straight diagonal line.
$(iii)$ Curved line.