An object is thrown vertically upwards with a speed of 15 m/s. What is the maxim
Practice Questions
Q1
An object is thrown vertically upwards with a speed of 15 m/s. What is the maximum height it reaches? (g = 10 m/s²)
11.25 m
22.5 m
15 m
20 m
Questions & Step-by-Step Solutions
An object is thrown vertically upwards with a speed of 15 m/s. What is the maximum height it reaches? (g = 10 m/s²)
Step 1: Identify the initial speed (v) of the object, which is 15 m/s.
Step 2: Identify the acceleration due to gravity (g), which is 10 m/s².
Step 3: Use the formula for maximum height (h) reached by the object: h = v^2 / (2g).
Step 4: Calculate v^2: 15^2 = 225.
Step 5: Calculate 2g: 2 * 10 = 20.
Step 6: Divide v^2 by 2g: 225 / 20 = 11.25.
Step 7: Conclude that the maximum height reached by the object is 11.25 m.
Kinematics – The question tests the understanding of kinematic equations, specifically the calculation of maximum height in projectile motion.
Energy Conservation – It also touches on the concept of energy conservation, where kinetic energy is converted to potential energy at the maximum height.
