Question:
An object is thrown vertically upward with a speed of $30\, m/s$. The velocity of the object half-a-second before it reaches the maximum height is
An object is thrown vertically upward with a speed of $30\, m/s$. The velocity of the object half-a-second before it reaches the maximum height is
Updated On: Oct 29, 2024
- 4.9 m/s
- 9.8 m/s
- 19.6 m/s
- 25.1 m/s
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The Correct Option is A
Solution and Explanation
According to the question,
Velocity of an object half a second before maximum height
= Velocity of an object half a second after maximum height (return journey)
$=0+g t=0+9.8 \times \frac{1}{2}=4.9 m / s$
Velocity of an object half a second before maximum height
= Velocity of an object half a second after maximum height (return journey)
$=0+g t=0+9.8 \times \frac{1}{2}=4.9 m / s$
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Concepts Used:
Motion in a straight line
The motion in a straight line is an object changes its position with respect to its surroundings with time, then it is called in motion. It is a change in the position of an object over time. It is nothing but linear motion.
Types of Linear Motion:
Linear motion is also known as the Rectilinear Motion which are of two types:
- Uniform linear motion with constant velocity or zero acceleration: If a body travels in a straight line by covering an equal amount of distance in an equal interval of time then it is said to have uniform motion.
- Non-Uniform linear motion with variable velocity or non-zero acceleration: Not like the uniform acceleration, the body is said to have a non-uniform motion when the velocity of a body changes by unequal amounts in equal intervals of time. The rate of change of its velocity changes at different points of time during its movement.