Question

Q. 1. Which of the following statement is not correct for an object moving along a straight path in an accelerated motion?
(a) Its speed keeps changing
(b) Its velocity always changes (c) It always goes away from the earth .
(d) A force is always acting on it

CHOOSE TEH CORRECT OPTION
PLS DONT SPAM ITS URGENT​

Answer 1

Answer:-

Correct answer is option (c) It always goes away from the Earth .

Explanation:-

For option (a) and (b) :-

We know that acceleration is the change in speed/velocity of an object with respect to time. Thus when an object is moving along a straight path in an accelerated motion, it is gradual that it's speed and velocity will change.

Hence, option (a) and (b) are correct statements!

For option (c) :-

In case of accelerated motion in a straight line, the body should not always go away from the earth. There are a number of different cases of the same nature.

Hence, option (c) is an incorrect statement!

For option (d) :-

According to Newton's 2nd law of motion, we know that F = ma. This shows that without force, it is impossible for an object to accelerate.

Hence, option (d) is a correct statement!

Answer 2

Question :-

☛ Which of the following statement is not correct for an object moving along a straight path in an accelerated motion ?

(a) It's speed keeps changing.

(b) It's velocity always changes.

(c) It's always goes away from the earth.

(d) A force is always acting on it.

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Answer :-

(c) It's always goes away from the earth.

Explanation :

$\mapsto$ For going away from the earth, the net force from the body must be more than Mg. The force must be in vertically upwards direction also.

$\mapsto$ An object moving along a straight path in an accelerated motion, it is not necessary that it always goes away from the earth.

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