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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Similar Questions
Give one example for each of the type of motion when
$(i)$ acceleration is in the direction of motion.
$(ii)$ acceleration is against the direction of motion.
$(iii)$ acceleration is uniform.
$(i)$ acceleration is in the direction of motion.
$(ii)$ acceleration is against the direction of motion.
$(iii)$ acceleration is uniform.
Medium
View Solution$A$ body thrown in the vertically upward direction rises up to a height $h$ and comes back to the position of its start. Calculate: $(a)$ the total distance travelled by the body and $(b)$ the displacement of the body. Under what condition will the magnitude of the displacement be equal to the distance travelled by an object?
Medium
View SolutionAn object is dropped from rest at a height of $150 \, m$ and simultaneously another object is dropped from rest at a height of $100 \, m$. What is the difference in their heights after $2 \, s$ if both objects drop with the same acceleration? How does the difference in heights vary with time?
Difficult
View Solution$A$ scooter starts from rest and moves in a straight line with a constant acceleration,covering a distance of $64 \, m$ in $4 \, s$.
$(i)$ Calculate its acceleration and its final velocity.
$(ii)$ At what time had the scooter covered half the total distance?
$(i)$ Calculate its acceleration and its final velocity.
$(ii)$ At what time had the scooter covered half the total distance?
Medium
View SolutionThe velocity-time graph of a car is given below. The car weighs $1000 \ kg$.
$(i)$ What is the distance travelled by the car in the first $2 \ s$?
$(ii)$ What is the braking force at the end of $5 \ s$ to bring the car to a stop within one second?
$(i)$ What is the distance travelled by the car in the first $2 \ s$?
$(ii)$ What is the braking force at the end of $5 \ s$ to bring the car to a stop within one second?
Medium
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