A solid disk is rolling without slipping along a horizontal surface with a speed of 4.50 m/s when it starts up a ramp that makes an angle of 25.0° with the horizontal. What is the speed of the disk after it has rolled 3.00 m up the ramp?
A) 4.01 m/s
B) 1.92 m/s
C) 2.06 m/s
D) 6.79 m/s
E) 8.02 m/s
B
You might also like to view...
The electric potential at a distance d from a point charge is V. At a distance d’, the potential is 2V. What is the ratio of electric field at d’ to that at d?
A. 4 B. more information is necessary C. 2 D. 1?2 E. 1?4
The allowed values for the magnetic quantum number, m? , are from m? = -? to +?
Indicate whether the statement is true or false
An object is at rest on the equator. Estimate its speed relative to the center of the Earth in m/s
1.less than 0.001 2.between 0.001 and 0.01 3.between 0.01 and 0.1 4.between 0.1 and 1 5.between 1 and 10 6.between 10 and 100 7.between 100 and 1,000 8.between 1,000 and 10,000 9.more than 10,000 10.Impossible to determine
If an electron is accelerated from rest through a potential difference of 300 V, find its approximate speed at the end of this process. (e = 1.6 × 10^-19 C; me = 9.1 × 10^-31 kg)
a. 2.5 × 10^7 m/s c. 1.0 × 10^7 m/s b. 2.1 × 10^7 m/s d. 1.4 × 10^7 m/s