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What will be its displacement after 2.5s when a bullet is fired straight up from a gun with a muzzle velocity of 172 meters per second and the acceleration of gravity is 9.8 meters per sec sq.?
Wiki User
∙ 14y ago
The acceleration of gravity is 9.8 m/s2 .
After 2.5 s, the bullet's speed is [ 172 - 2(9.8) ] = 152.4 m/s upward.
The average speed during those 2.5 seconds is [ 1/2 (172 + 152.4) ] = 162.2 m/s.
In 2.5 seconds at that average speed, the bullet travels (162.2 x 2.5) = 405.5 meters.
Wiki User
∙ 14y ago
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What happens to the displacement velocity and acceleration of an object as it falls through the air to the ground?
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How is gravity related to calculus?
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What is the acceleration at highest pointn when ball is thrown straight up?
The acceleration at the highest point when a ball is thrown straight up is equal to the acceleration due to gravity, pointing downwards (-9.8 m/s^2). At the highest point, the velocity of the ball is momentarily zero before it starts to fall back down.
What is the only factor needed to calculate change in velocity due to acceleration of gravity 9.8 m s?
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How is the initial velocity zero but the acceleration is not?
Going back to definitions, Velocity is change of distance with time; and acceleration is change in velocity with time. Initially, the velocity is zero, as is the acceleration, BUT the Force of Gravity attracts the falling mass, and causes velocity to appear. But the continued application of the Force of Gravity causes the velocity to increase. And as we know, increase in velocity is acceleration. [space for QED]
What is slope of velocity graph?
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Why does gravity change velocity?
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