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An object is thrown upwards with a speed of 20 m/s. How long will it take to rea

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Question: An object is thrown upwards with a speed of 20 m/s. How long will it take to reach the maximum height? (Assume g = 10 m/s²)

Options:

  1. 1 s
  2. 2 s
  3. 3 s
  4. 4 s

Correct Answer: 2 s

Solution: 

Time to reach maximum height = initial velocity / g = 20 m/s / 10 m/s² = 2 s.

An object is thrown upwards with a speed of 20 m/s. How long will it take to rea

Practice Questions

Q1
An object is thrown upwards with a speed of 20 m/s. How long will it take to reach the maximum height? (Assume g = 10 m/s²)
  1. 1 s
  2. 2 s
  3. 3 s
  4. 4 s

Questions & Step-by-Step Solutions

An object is thrown upwards with a speed of 20 m/s. How long will it take to reach the maximum height? (Assume g = 10 m/s²)
  • Step 1: Identify the initial speed of the object. In this case, it is 20 m/s.
  • Step 2: Identify the acceleration due to gravity (g). Here, it is given as 10 m/s².
  • Step 3: Use the formula to find the time to reach maximum height. The formula is: time = initial speed / g.
  • Step 4: Plug in the values: time = 20 m/s / 10 m/s².
  • Step 5: Calculate the result: 20 divided by 10 equals 2.
  • Step 6: Conclude that it will take 2 seconds to reach the maximum height.
  • Projectile Motion – The question tests understanding of the basic principles of projectile motion, specifically the time taken to reach maximum height when an object is thrown vertically upwards.
  • Acceleration due to Gravity – It assesses the knowledge of gravitational acceleration and its effect on the motion of the object.
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