Homework Help: pysics

Posted by TC on Monday, October 12, 2009 at 6:26pm.

A 900 kg car rolling on a horizontal surface has speed v = 60 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.2 m. What is the spring stiffness constant of the spring?
I solved this and i had 25826.44629, but i am being told i am wrong. please i need help with this.

pysics - bobpursley, Monday, October 12, 2009 at 6:48pm
1/2 m v^2=1/2 k x^2
k= mv^2/x^2

be certain to change km/hr to m/s

Answer this Question

Related Questions

physics - A 900 kg car rolling on a horizontal surface has speed v = 55 km/h ...
phy - A 900 kg car rolling on a horizontal surface has speed v = 70 km/h when it...
physics - A 1350 kg car rolling on a horizontal surface has a speed of 40 km/hr ...
Physics - A 1000 kg car rolling on a horizontal surface has speed v = 55 km/h ...
physics - A 1300-kg car rolling on a horizontal surface has speed v = 65 km/h ...
physics - A 1100 kg car rolling on a horizontal surface has speed v = 70 km/h ...
PHYSICS - A 950 kg car rolling on a horizontal surface has speed v = 50 km/h ...
college physics - A 1300 kg car rolling on a horizontal surface has speed v = 65...
physics - A 1370 kg car rolling on a horizontal surface has a speed of 20 km/hr ...
Physics - A 1200 kg car rolling on a horizontal surface has spped v= 65 km/h ...

For Further Reading

First Name:
School Subject:
Answer: