A body is thrown vertically upwards with a speed of 20 m/s. How high will it ris

A body is thrown vertically upwards with a speed of 20 m/s. How high will it rise before coming to rest?

A body is thrown vertically upwards with a speed of 20 m/s. How high will it rise before coming to rest?

Correct Answer: 20 m

Step 1: Identify the initial speed of the body, which is given as 20 m/s.
Step 2: Identify the acceleration due to gravity, which is given as g = 10 m/s².
Step 3: Use the formula for maximum height (h) when an object is thrown upwards: h = v² / (2g).
Step 4: Substitute the values into the formula: h = (20 m/s)² / (2 * 10 m/s²).
Step 5: Calculate (20 m/s)², which equals 400 m²/s².
Step 6: Calculate 2 * 10 m/s², which equals 20 m/s².
Step 7: Divide 400 m²/s² by 20 m/s² to find h: h = 400 / 20 = 20 m.
Step 8: Conclude that the maximum height the body will rise before coming to rest is 20 meters.

Kinematics – The study of motion, specifically how objects move under the influence of forces.
Energy Conservation – The principle that energy cannot be created or destroyed, only transformed from one form to another.
Gravitational Acceleration – The acceleration due to gravity, which is approximately 9.81 m/s² but often rounded to 10 m/s² for simplicity in calculations.