GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Detailed explanation-1: -For the horizontal motion of a projectile, there is a zero acceleration.
Detailed explanation-2: -Nothing accelerates a projectile horizontally, so horizontal acceleration is always zero.
Detailed explanation-3: -The projectile is only acted upon by the gravitational force. So acceleration in horizontal direction is zero and that in vertical direction is g (9.8 m/s2 vertically downwards).
Detailed explanation-4: -There is no horizontal force, the weight has no horizontal component so the horizontal acceleration =0, horizontal constant velocity.
Detailed explanation-5: -In projectile motion there is only one force, the force due to gravity. This force necessarily only acts downwards. By Newton’s Second Law, F=ma, and since there is no force in the x-direction, acceleration in that direction is also zero.