Astudent pulls on a 20kg box with a force of 50 n at an angle 45 degrees relative to the horizontal. the box increases speed at a rate of 1.5 m/s2. what is the approximate normal forc on the box

Explanation:

Let be the force exerted by the student.

Let be the vertical component of force.

Let be the angle between horizontal and direction of application of force.

Given,

Let be the weight of the object.

Given mass of box=

Let be the normal force.

Since the vertical force from student is in opposite direction of that of weight of box,

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

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

c) both a and b.

a sonic boom is a loud boom that breaks the sound barrier

explanation: