Home › JEE Advanced › Mechanics › Projectile motion near the Earth's surface can b…
Projectile motion near the Earth's surface can be treated as two independent motions because
Agravity acts equally in all directions
Bthe horizontal motion has constant acceleration while the vertical motion has constant speed
Cthe horizontal motion is at constant speed while the vertical motion is accelerated by gravity
Dboth horizontal and vertical motions have zero acceleration
Answer & Solution
Correct answer: C. the horizontal motion is at constant speed while the vertical motion is accelerated by gravity
In ideal projectile motion, gravity acts only vertically downward. Therefore horizontal motion has constant velocity, while vertical motion has constant acceleration $-g$.
Related questions
A stone is whirled on a string. The inward force keeping it on its circle is the centripetA ring or sphere rolling without slipping touches the ground at just one point at a time. Experiments show that the coefficient for a sliding object compares with the one for a staThe constant of proportionality linking maximum static friction to the normal force is theThe friction acting before an object begins to slide is distinguished from the friction acA crate is pushed but does not budge. The surface force that cancels the push is called:A book lies still on a table. Balancing its weight is an upward push from the table calledTwo railway wagons collide and couple together. The standard application of conservation o