A car, moving along a straight stretch of highway, begins to accelerate at 0.0239 m/s 2 . It takes the car 70.6 s to cover 1 km.
How fast was the car going when it first
began to accelerate?
Answer in units of m/s

grav forces affect all objects magnetic forces affect magnetic objects and electric currents

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

80cm/s.

24cm/s.

53.3cm/s.