Acurve of radius 78 m is banked for a design speed of 85 km/h. if the coefficient of static friction is 0.30 (wet pavement), at what range of speeds can a car safely make the curve? [hint: consider the direction of the friction force when the car goes too slow or too fast.]

Maximum speed at which car can take turn on banked road is given as

now we know that

v = 85 km/h = 23.61 m/s

R = 78 m

now we will have

now solving above equation we will have

Now for the minimum speed

so speed range will be 21.2 km/h to 85 km/h

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.