Question

Indiana jones (mass of 72.0kg) is being chased by an evil army of nazis. he slides down a steep river bank (70 degrees) incline. he encounters 25.0 n of friction while sliding. what is his acceleration down the riverbank?

a) 2.1 m/s²
b) 3.5 m/s²
c) 4.6 m/s²
d) 1.8 m/s²

Answer 1

The acceleration down the riverbank can be found by calculating the net force and subtracting the friction force from the net force divided by the mass. The net force can be found using the weight and the angle of the incline.

Step-by-step explanation:

To find the acceleration down the riverbank, we can use the formula:

acceleration = (net force - friction force) / mass

The net force acting on Indiana Jones down the riverbank is the component of his weight parallel to the incline, which can be calculated using:

net force = weight * sin(angle)

Substituting the given values, we have:

net force = (72.0 kg * 9.8 m/s²) * sin(70 degrees)

The friction force is given as 25.0 N.

Lastly, we can substitute the net force and friction force into the acceleration formula to find the answer.