2018:

The force acting on the body is 20 N. The mass of the body is 5 kg. The angle between the force and the horizontal is 60°.

The acceleration of the body can be found using the following formula:

a = F / m

Where:

  • a is the acceleration of the body in m/s^2
  • F is the force acting on the body in N
  • m is the mass of the body in kg

In this case, the acceleration of the body is:

a = 20 N / 5 kg = 4 m/s^2

Therefore, the acceleration of the body is 4 m/s^2.

2017:

The vector A is given by A = 2i + 3j - 4k. The vector B is given by B = i + j + k.

The vector A + B can be found by adding the components of the two vectors:

A + B = (2i +