Jamal pulls a 250-N sled up a 29.0° slope at constant speed by a force of 200 N. Near the top of the hill he releases the sled. With what acceleration does the sled go down the hill?
a. 7.84 m/s2
b. 9.30 m/s2
c. 3.32 m/s2
d. 1.66 m/s2
e. 2.66 m/s2
d
You might also like to view...
Energy and Mass: Consider a student whose mass is 70 kg. If all his mass were converted to electrical energy, for how many years could he keep a 100-W light bulb burning? (c = 3.0 × 108 m/s)
What will be an ideal response?
Water is to be condensed at 1 atmosphere pressure in a compact heat exchanger having vertical stainless steel plates at 40ºC. Plot the condensation boundary layer thickness flowing down the vertical surface as a function of the distance down the plate, assuming laminar flow. At what point would you assume the condensate flow to become turbulent?
What will be an ideal response?
Cholesterol belongs to what class of organic compounds?
a. Alkyl halides b. Esters c. Carboxylic acids d. Alcohols
Conditions for the preservation of fossils are best achieved
A) in desert environments. B) in glaciated environments. C) in shallow river beds. D) on the floors of shallow seas.