A motorist driving a 1200-kg car on level ground accelerates from 20.0 m/s to 30.0 m/s in a time of 5.0s. Neglecting friction and air resistance, determine the average mechanical power in watts the engine must supply during this time interval.

5 answers

check your 3-24-11,6:57pm post.
I don't know what you are talking about. Please help me with this problem
A motorist driving a 1200-kg car on level ground accelerates from 20.0 m/s to 30.0 m/s in a time of 5.0s. Neglecting friction and air resistance, determine the average mechanical power in watts the engine must supply during this time interval.
Already answered elsewhere.
http://www.jiskha.com/display.cgi?id=1301204886