Selina solutions

Selina solutions

Grade 7

Motion | Objective Questions

Question 1

Q1) Write true or false for each statement

(a) two trains going in opposite directions with the same speed are at rest relative to each other.

(b) a ball is thrown vertically upwards. Its motion is uniform throughout.

(c) the motion of a train starting from one station and reaching at another station is non-uniform.

(d) A motion which repeats itself after a fixed interval of time is called periodic motion.

(e) a ball thrown by a boy from a roof top has oscillatory motion.

(f) mass has both magnitude and direction.

(g) weight always acts vertically downwards.

(h) mass varies from place to place but weight does not

Solution:

(a) False

(b) False

(c) True

(d) True

(e) False

(f) False

(g) True

(h) False

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subject-cta

Question 1

Q1) Write true or false for each statement

(a) two trains going in opposite directions with the same speed are at rest relative to each other.

(b) a ball is thrown vertically upwards. Its motion is uniform throughout.

(c) the motion of a train starting from one station and reaching at another station is non-uniform.

(d) A motion which repeats itself after a fixed interval of time is called periodic motion.

(e) a ball thrown by a boy from a roof top has oscillatory motion.

(f) mass has both magnitude and direction.

(g) weight always acts vertically downwards.

(h) mass varies from place to place but weight does not

Solution:

(a) False

(b) False

(c) True

(d) True

(e) False

(f) False

(g) True

(h) False

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subject-cta
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