If an object is thrown upwards with a speed of 20 m/s, how high will it go befor

Practice Questions

Q1
If an object is thrown upwards with a speed of 20 m/s, how high will it go before coming to rest? (g = 10 m/s²) (2023)
  1. 20 m
  2. 40 m
  3. 80 m
  4. 100 m

Questions & Step-by-Step Solutions

If an object is thrown upwards with a speed of 20 m/s, how high will it go before coming to rest? (g = 10 m/s²) (2023)
  • 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 calculate the maximum height: Height = (Initial Speed)² / (2 × g).
  • Step 4: Substitute the values into the formula: Height = (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 the height: 400 m²/s² / 20 m/s² = 20 m.
  • Step 8: Conclude that the maximum height the object will reach is 20 meters.
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