These two questions I can not seem to understand can you please show me how and

Question

These two questions I can not seem to understand can you please show me how and what answer you got for number 4 I got 7.91x10^5J but it doesn't seem to be right.
QUESTION 10 points Save Answer You are driving your car at a constant speed of 44 mph over a distance of 4.5 miles. What is the work done on your car by air drag? Assume D=0.43 kg/m. QUESTION 10 points Save Answer You are driving your car at a constant speed of 54 mph over a distance of 4.4 miles. Taking air drag into account (D-1.17 kg/m), what is the work done on your car by the friction acting from the road on your tires?

Explanation / Answer

a.WORK DONE=D*distance*(velocity)^2

=0.43*44*4.5/3600=0.02365 j

b.

WORK DONE=D*distance*(velocity)^2

=1.17*54*4.4/3600=0.07722J

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.