PHYSICS HELP PLS
A car with mass 2400 kg and initial velocity 30.0 m/s brakes to a stop in 60.0 meters.
What is the coefficient of friction between the tires and the road? (8 - 10 m/s)
(s) 0.75
(c) 1.27
(b) 0,98
(d) 1.65
30°
A street sign with given weight is held up by
two cables - Cable
A at 30° to the vertical, and
Cable B which is horizontal
What is the tension in Cable B?
(a) 178 N
(c) 277 N
mg -
400
N
(b) 231 N
(d) 360 N
What is the acceleration of the Atwood machine shown?
(a) 3.0 m/s?
10 m/s)
(b)
3.8 m/s
(c)
5.0 m/s
МА
mo
3.0
kg
1.0
(d)
6.5 m/s
kg
