An object is thrown vertically upwards with a velocity of 20 m/s. How high will

An object is thrown vertically upwards with a velocity of 20 m/s. How high will it rise? (Assume g = 10 m/s²) (2020)

An object is thrown vertically upwards with a velocity of 20 m/s. How high will it rise? (Assume g = 10 m/s²) (2020)

Step 1: Identify the initial velocity (v) of the object, 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 by an object 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 m²/s² / 20 m/s² = 20 m.
Step 8: Conclude that the maximum height the object will rise is 20 meters.

Kinematics – The question tests the understanding of the kinematic equations for uniformly accelerated motion, specifically the calculation of maximum height in projectile motion.
Gravity – It assesses the knowledge of gravitational acceleration and its effect on an object's motion when thrown vertically.