# physics

posted by .

a bar is pushed so that it slides across the floor. how far will it go, given the coefficient of kinetic friction is 0.25, and the push imparts an initial speed of 2.5m/s?

• physics -

stopping force = -.25 * m * 9.8
F = m a
a = -.25 * 9.8 = -2.45 m/s^2

v = 2.5 - 2.45 t
so stops at t = 1.02 seconds
x = 2.5 * 1.02 + (1/2)(-2.45) (1.02)^2
x = 2.55 - 1.27 = 1.28 m

## Similar Questions

1. ### physics

A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.15 and the push imparts an initial speed of 3.9 m/s?
2. ### physics

A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.17 and the push imparts an initial speed of 4.1 m/s?
3. ### physics

A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.17 and the push imparts an initial speed of 4.3 m/s?
4. ### physics

A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.17 and the push imparts an initial speed of 4.3 m/s?
5. ### Physics

A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.24 and the push imparts an initial speed of 3.8 m/s?
6. ### Physics

A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.16 and the push imparts an initial speed of 4.2 m/s?
7. ### Physics

A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.25 and the push imparts an initial speed of 6.0m/s?
8. ### Physics

A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.210 and the push imparts an initial speed of 3.50 m/s?
9. ### physics

a box is given a push so that it slides across the floor. how far will it go, given that the coefficient of kinetic friction is 0 .2 and the push imparts an initial speed of 4m/s?
10. ### physics

a box is given a push so that it slides across the floor. how far will it go, given that the coefficient of kinetic friction is 0.2 and the push imparts an initial speed of 4m/s?

More Similar Questions