Sunday

January 25, 2015

January 25, 2015

Posted by **David** on Wednesday, June 5, 2013 at 10:24pm.

- fundamentals -
**herp_derp**, Thursday, June 6, 2013 at 12:21amah...DANNY..we meet again...

not sure if this is right but i'll take a shot at it...

1. convert all the info into MKS units (MKS = meters, kilograms, seconds)

19 km/hr = 5.277 m/s

95 km/hr = 26.388 m/s

0.8 km = 800 m

2. start with this equation:

vf^2 = vi^2 + 2ad

then, solve for "a"

a = (vf^2 - vi^2)/(2d)

plug in the numbers...

((26.388 m/s)^2 - (5.277 m/s)^2)/(2 x 800 m) = 0.4178 m/s^2

3. then we take care of those vectors...

Fo - Fe = Fc

ma - Fe = Fc

(1400 kg)(0.4178 m/s^2) - (320 N) = 264.92 N

-----

remember DANNY.....HERP THE DERP!!!

**Answer this Question**

**Related Questions**

Physics - The velocity of a vehicle is uniformly reduced from 72km/h to 24km/ ...

physics - A 1,500 kg car starts from rest and accelerates to a speed of 12 m/s ...

science - A car of mass 1500 kg accelerates up a hill of incline 8 degrees, ...

COLLEGE PHYSICS - A car with mass of 1400kg is towed with a net force of 4500N. ...

Physics - A 1200kg car accelreates from 0mph-60mph in 8.5 seconds. Calculate the...

physics - two people are pushing a car of mass 2000kg. if they each push with a ...

physics10 - A sled of mass 51 kg is pulled along snow-covered, flat ground. The ...

physics - What force is needed to accelerate a child on a sled (total mass = 65....

Physics - A car drives at 15 m/s and has an air resistance force of 277 N. What ...

physics - What force is needed to accelerate a child on a sled with the total ...