A ball is thrown upwards with a speed of 15 m/s. How long will it take to reach
Practice Questions
Q1
A ball is thrown upwards with a speed of 15 m/s. How long will it take to reach the highest point? (Take g = 10 m/s²) (2023)
1.5 s
2 s
3 s
4 s
Questions & Step-by-Step Solutions
A ball is thrown upwards with a speed of 15 m/s. How long will it take to reach the highest point? (Take g = 10 m/s²) (2023)
Step 1: Understand that when a ball is thrown upwards, it will eventually stop rising and reach a highest point before falling back down.
Step 2: Know that the initial speed (u) of the ball is 15 m/s.
Step 3: Recognize that the acceleration due to gravity (g) is 10 m/s², which acts downwards.
Step 4: Use the formula to find the time (t) to reach the highest point: t = u / g.
Step 5: Substitute the values into the formula: t = 15 m/s / 10 m/s².
Step 6: Calculate the time: t = 1.5 seconds.
Projectile Motion – The question tests the understanding of the motion of a projectile under the influence of gravity, specifically how to calculate the time taken to reach the highest point.
Kinematic Equations – It involves the use of the basic kinematic equation relating initial velocity, acceleration due to gravity, and time.