Is it possible for speed to be constant while acceleration is not zero? Give an example of such a situation.

A. An object moving in a circle with uniform speed has no change of speed but it has acceleration. It has centripetal acceleration towards the center of the circle.
B. An object moving in a triangle with non-uniform speed has no change of speed but it has acceleration. It has scalar acceleration towards the center of the triangle.
C. An object moving in an ellipse with uniform speed has no change of speed but it has momentum. It has centripetal acceleration towards the tangent of the circle.


Ans: A. An object moving in a circle with uniform speed has no change of speed but it has acceleration. It has centripetal acceleration towards the center of the circle.

Physics & Space Science

You might also like to view...

Radioactive Decay: A radioactive substance with a half-life of 3.0 days has an initial activity of 2400 Bq. What is its activity after 6.0 days?

A. 1200 Bq B. 1800 Bq C. 600 Bq D. 300 Bq E. 150 Bq

Physics & Space Science

In an isochoric process where the pressure increases from to , does the internal energy of the system increase or decrease and does the temperature increase or decrease?

a. The internal energy increases and the temperature decreases. b. The internal energy increases and the temperature increases. c. The internal energy decreases and the temperature decreases. d. The internal energy decreases and the temperature increases.

Physics & Space Science

A 25 nH inductor is in an AC circuit whose generator has an rms voltage of 12 V. At what frequency must the generator drive the circuit if the rms current is to be 2.0 mA?

A. 0.15 MHz B. 38 GHz C. 0.96 MHz D. 240 GHz

Physics & Space Science

Constant Angular Acceleration: A machinist turns on the power on to a grinding wheel at time t = 0 s. The wheel accelerates uniformly from rest for 10 s and reaches the operating angular speed of 96 rad/s. The wheel is run at that angular velocity for 40 s and then power is shut off. The wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. For how long a time after the power is shut off does it take the wheel to stop?

A. 64 s B. 62 s C. 66 s D. 68 s E. 70 s

Physics & Space Science