Using integration, the work done by a variable force F = kx from x=0 to x=d is:

A vector A of magnitude 10 N makes an angle of 60° with the x-axis. Its x-component is:

The second derivative d²x/dt² represents which physical quantity (x = displacement, t = time)?

Which of the following is correct for small angles (θ in radians)?

The projection of vector A along vector B is:

The definite integral ∫₀² x dx equals: