The velocity of a 1.9 kg block sliding down a frictionless inclined plane is found to be 1.23 m/s. 1.3 s later, it has a velocity of 5.78 m/s. What is the angle of the plane with respect to the horizontal (in degrees)?
The velocity of a 1.9 kg block sliding down a frictionless inclined plane is found to be 1.23 m/s. 1.3 s later, it has a velocity of 5.78 m/s. What is the angle of the plane with respect to the horizontal (in degrees)? @Mathematics

Question

The velocity of a 1.9 kg block sliding down a frictionless inclined plane is found to be 1.23 m/s. 1.3 s later, it has a velocity of 5.78 m/s. What is the angle of the plane with respect to the horizontal (in degrees)? 
The velocity of a 1.9 kg block sliding down a frictionless inclined plane is found to be 1.23 m/s. 1.3 s later, it has a velocity of 5.78 m/s. What is the angle of the plane with respect to the horizontal (in degrees)? @Mathematics

anonymous · Answer

Since you know the change in velocity and the time, you could easily find acceleration and net force. Drawing a FBD would allow you to see which force is acting as the net force. The rest is simple.