Question

Two balls of equal masses are thrown upwards along the same vertical direction at an interval of 2 s, with the same initial velocity of 39.2 m/s. The two balls will collide at a height of

• A. 39.2 m
• B. 73.5 m
• C. 78.4 m
• D. 117.6 m

Hint:

In projectile motion, objects thrown with the same initial velocity will collide at a point based on their time difference and motion equations.

Answer 1

The Correct Option is B

Step 1: Initial velocity and time interval.
The initial velocity for both balls is the same, and they are thrown with a 2-second time difference. Using kinematic equations, we calculate the height at which they meet based on their relative motions.

Step 2: Conclusion.
The balls collide at 73.5 m, which is the correct answer.