Projectile Motion Review

A projectile is launched and reaches its peak in 1.2 seconds. What was the initial vertical velocity of the projectile?

• 9.48 m/s

• 8.13 m/s

• 
  11.76 m/s

• 8.13 m/s

A basketball is thrown upward and takes 1.8 seconds to reach its peak. Calculate its initial vertical velocity. (Use g=9.8 m/s2)

A stone is launched vertically and reaches its highest point after 4.2 seconds. What was its takeoff speed? (Use g=9.8 m/s2)

A ball is thrown straight upward with an initial vertical velocity of 15 m/s. How long does it take to reach its highest point? (Use g=9.8 m/s2)

A ball is thrown horizontally from a cliff 80 meters high with a speed of 15 m/s. How far from the base of the cliff does it land? (Use g=9.8 m/s2)

Answer explanation

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A baseball is thrown from a 5-meter-high platform at 10 m/s, 15° above the horizontal. How far does it travel before hitting the ground? (Use g=9.8 m/s2)

Answer explanation