- #1
terpsgirl
- 29
- 0
I'm not sure what equation is used on this particular problem.
How much time would be requird to stop a 2,000 kg car that is moving at 80.0 km/hr if the braking force is 8,000 N?
I know...
Mass 2000 kg
Acceleration is 80.0 km/hr
Breaking force is 8,000 N
What tension must a 50.0 cm length of string support in order to whirl an attached 1,000.0 gram stone in a circular path at 5.00 m/s?
I used the formula F= mv^2/ r
= (1,000.0 g) (5.00 m/s)/ 50.0 cm
= 1,000.0 x 5.00 g*m/s
____________________
50.0
I wanted to know if I was tackling this question correctly..if not what am I doing wrong?
THX!
How much time would be requird to stop a 2,000 kg car that is moving at 80.0 km/hr if the braking force is 8,000 N?
I know...
Mass 2000 kg
Acceleration is 80.0 km/hr
Breaking force is 8,000 N
What tension must a 50.0 cm length of string support in order to whirl an attached 1,000.0 gram stone in a circular path at 5.00 m/s?
I used the formula F= mv^2/ r
= (1,000.0 g) (5.00 m/s)/ 50.0 cm
= 1,000.0 x 5.00 g*m/s
____________________
50.0
I wanted to know if I was tackling this question correctly..if not what am I doing wrong?
THX!