A body is thrown vertically upwards with a speed of 20 m/s. What is the maximum

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Question: A body is thrown vertically upwards with a speed of 20 m/s. What is the maximum height it reaches? (g = 10 m/s²)

Options:

Correct Answer: 40 m

Solution:

Using the formula h = (u^2)/(2g), where u = 20 m/s and g = 10 m/s², we get h = (20^2)/(2*10) = 20 m.

A body is thrown vertically upwards with a speed of 20 m/s. What is the maximum height it reaches? (g = 10 m/s²)

A body is thrown vertically upwards with a speed of 20 m/s. What is the maximum height it reaches? (g = 10 m/s²)

Correct Answer: 20 m

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

Kinematics – The study of motion, specifically the equations that describe the motion of objects under the influence of gravity.
Projectile Motion – Understanding the motion of an object thrown vertically, including concepts of initial velocity, acceleration due to gravity, and maximum height.