Waves And Motions(General Knowledge > General Science ) Questions and answers for exam Preparation

General Knowledge > General Science

WAVES AND MOTIONS MCQs

Laws Of Motion, Second Law Motion, Uniform Circular Motion, First Law Of Motion, Third Law Motion, Horizontal Projectile Motion, Oscillations And Waves, Radio Wave Propagation, Wave Optics

Total Questions : 131 | Page 13 of 14 pages

Question 121. What is the most direct cause of a car's centripetal acceleration as it rounds a curve?

The force of the steering wheel
The weight of the car.
The normal force exerted by the road.
The friction between the tires and the road.

Discuss Question

Answer: Option A. -> The force of the steering wheel

Question 122. What force keeps an object moving in a circle?

centripetal force (inward)
centrifugal force (outward)

Discuss Question

Answer: Option A. -> centripetal force (inward)

Question 123. What type of acceleration does an object moving with constant speed in a circular path experience? A) free fall B) constant acceleration C) linear acceleration D) centripetal acceleration

Discuss Question

Answer: Option D. -> D

Question 124. Which statement is true about an object that is traveling in uniform circular motion?

The speed of the object varies.
The net force on the object is directed toward the center of the circular path.
The direction of the object's velocity is constant.
The net force on the object is directed away from the center of the circular path.

Discuss Question

Answer: Option B. -> The net force on the object is directed toward the center of the circular path.

Question 125. If an object is spinning around on a string and the string was suddenly cut, the object would move in a

curved path
straight line

Discuss Question

Answer: Option B. -> straight line

Question 126. Which is true about centripetal force and centripetal acceleration?

The centripetal acceleration is always pointing toward the center of an orbit and the centripetal force is always pointing outward
The centripetal acceleration is always pointing outward from the center of an orbit and the centripetal force is always pointing inward
The centripetal acceleration is always pointing toward the center of an orbit and the centripetal force also pointing toward the center but in a totally different location
The centripetal acceleration is always pointing toward the center of an orbit and the centripetal force also pointing toward the center and in the same exact location as the centripetal acceleration

Discuss Question

Answer: Option D. -> The centripetal acceleration is always pointing toward the center of an orbit and the centripetal force also pointing toward the center and in the same exact location as the centripetal acceleration

Question 127. What's the centripetal force of a 0