A100. n block sits on a rough horizontal floor. the coefficient of sliding friction between the block and the floor is 0.250. a horizontal force of 90.0 n acts on the block for 3.00 seconds. calculate the velocity of the block after 3.00 seconds if it starts from rest.

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s