A 2.0-kg block slides down a fixed, rough curved track. The block has a speed of 5.0 m/s after its height above a horizontal surface has decreased by 1.8 m. Assume the block starts from rest. What is the change in mechanical energy of the block caused by the force of friction during this descent?
a. ?14 J
b. ?12 J
c. ?10 J
d. ?16 J
e. ?25 J
c
Physics & Space Science
You might also like to view...
When at least two reactants join to form just one product, the reaction is referred to as
Physics & Space Science
In a 1-g gravitational field, in 1 s, a light beam will curve beneath a perfectly straight line by
A) much less than 4.9 m. B) about 4.9 m. C) much more than 4.9 m.
Physics & Space Science
Who is credited with the origins of scientific thought?
What will be an ideal response?
Physics & Space Science
An AC series circuit has 8.00-W resistance, 15.00-W inductive reactance, and 10.00-W capacitive reactance. If an effective (rms) emf of 120 V is applied, what is the effective (rms) current value?
a. 26.0 A c. 9.23 A b. 5.31 A d. 12.7 A
Physics & Space Science