What determines the direction of motion of an object: velocity or acceleration?
(A) The direction of motion of an object is determined by its velocity. Velocity is a vector quantity that includes both the magnitude (speed) and the direction of motion. Acceleration,on the other hand,represents the rate of change of velocity. While acceleration can change the magnitude or the direction of the velocity,it does not define the current direction of motion itself.
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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.
$(i)$ Horizontal line.
$(ii)$ Straight diagonal line.
$(iii)$ Curved line.
Medium
View Solution$A$ motor bike running at $90 \, km \, h^{-1}$ is slowed down to $54 \, km \, h^{-1}$ by the application of brakes over a distance of $40 \, m$. If the brakes are applied with the same force,calculate $(i)$ the total time in which the bike comes to rest and $(ii)$ the total distance travelled by the bike.
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View SolutionAn athlete completes one round of a circular track of diameter $49 \,m$ in $20 \,s$. Calculate the distance covered and displacement at the end of $30 \,s$.
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View SolutionState whether the following statement is true or false:
$A$ motion is said to be uniform if a body undergoes equal displacements in equal intervals of time.
$A$ motion is said to be uniform if a body undergoes equal displacements in equal intervals of time.
Easy
View SolutionState whether the following statement is true or false:
Kinematics deals with the motion of non-living objects without taking into account the cause of their motion.
Kinematics deals with the motion of non-living objects without taking into account the cause of their motion.
Easy
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