Thursday

October 23, 2014

October 23, 2014

Posted by **Anonymous** on Wednesday, August 17, 2011 at 10:43pm.

m/s2). The mass of the car is 1354 kg. The average backward force due to air drag during

acceleration is 280 N. Find the forward force required to give the car this acceleration.

- physics -
**drwls**, Thursday, August 18, 2011 at 1:44amF(fwd) - F(bkwd) = M a

Based upon the speed change in 9.0 s, a is actually 2.98 m/s^2, not 3.0. I will use 3.0 anyway. They gave you more information that you need.

Solve for F(fwd)

F(fwd) = 280 + (1354)*(3.0) N

- physics -
**Sachin**, Thursday, August 18, 2011 at 1:13pmaccording to newton's second law;it states that

F=ma

therfore,F(force of car)-F(force of airdrag)=ma

ie:F-F=Ma

inorder to find the "F" transpond one F from left hand side to right hand side.

therfore,F=F+MA

ie:F=280+(1354)x(3.0)

F=4902.

Therfore the force needed to give the car this accelaration=4902.

- physics -
**Anonymous**, Saturday, March 8, 2014 at 9:32amNot be that person or anything... but your final calculation is incorrect... it is 4342.

- physics -
**Anonymous**, Monday, May 12, 2014 at 11:12ammy teacher book is the answer is 4.4e3

**Answer this Question**

**Related Questions**

Physics - A bank robber in a getaway car approaches an intersection at a speed ...

Physics - A sports car accelerates from rest to 89 km/h in 6.1s . What is its ...

Physics - A sports car accelerates from rest to 89 km/h in 6.1s . What is its ...

physics - a car travels on a straight road. a) starting from rest, the car is ...

AP physics - A 1280-kg car starts from rest and accelerates to 80 km/h in 23.0 s...

physics - A car starts at a position of x=6 km and has a speed of 6 mph. After ...

physics - A car starts at a position of x=6 ft and has a speed of 7 mph. After ...

Physics - A car starts at a position of x=5 m and has a speed of 6 mph. After 32...

Physics - Car A passes Car B on the highway. Rlative to car A's movement, Car B ...

Physics - A car of mass 1900kgs accelerates from rest to a speed of 27ms-1 in 8....