A 1.5 kg object is hanging from a spring with a spring constant of 15 N/m on Earth. What is the period of its up-and-down motion? 1.) 0.10 s

2.) 0.31 s

3.) 2.0 s

4.) 2.5 s

Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?

Asmall grinding wheel has a moment of inertia of 4.0×10−5 kg⋅m2 . what net torque must be applied to the wheel for its angular acceleration to be 150 rad/s2 ?

Suppose you plot the distance traveled by an object at various times and you discover that the graph is not a straight line. what does this indicate about the object's acceleration?