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A body is thrown vertically upwards with a speed of 20 m/s. How high will it ris
A body is thrown vertically upwards with a speed of 20 m/s. How high will it rise? (g = 10 m/s²)
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Practice Questions
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A body is thrown vertically upwards with a speed of 20 m/s. How high will it rise? (g = 10 m/s²)
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Using v² = u² - 2gh, 0 = (20)² - 2*10*h, h = 20 m.
Questions & Step-by-step Solutions
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Q
Q: A body is thrown vertically upwards with a speed of 20 m/s. How high will it rise? (g = 10 m/s²)
Solution:
Using v² = u² - 2gh, 0 = (20)² - 2*10*h, h = 20 m.
Steps: 10
Show Steps
Step 1: Identify the initial speed (u) of the body, which is 20 m/s.
Step 2: Identify the final speed (v) at the highest point, which is 0 m/s (the body stops rising at the peak).
Step 3: Identify the acceleration due to gravity (g), which is 10 m/s² (this acts downwards).
Step 4: Use the formula v² = u² - 2gh to find the height (h).
Step 5: Substitute the values into the formula: 0 = (20)² - 2*10*h.
Step 6: Calculate (20)², which is 400.
Step 7: Rewrite the equation: 0 = 400 - 20h.
Step 8: Rearrange the equation to solve for h: 20h = 400.
Step 9: Divide both sides by 20 to find h: h = 400 / 20.
Step 10: Calculate h, which equals 20 m.
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