i need help with calc

1. mm... An object is launched straight upward from a platform. Its height above ground is h(t) = 3 + vot 4.9t2 where h is in meters and t is in seconds. The symbol v0 is an unknown constant. The velocity of the object is 0 at the instant when t = 2 seconds. Compute v0. Your answer should be accurate to 1 decimal place. If you are not sure how to determine the units, click here. 3. .42....\" An object is launched straight upward from a platform. Its height above ground is h(t) = no + 23: 4.9t2 where h is in meters and t is in seconds. The symbol ho is an unknown constant. The object hits the ground when t = 5 seconds. Compute ho. Your answer should be accurate to 1 decimal place. If you are not sure how to determine the units, click here. am"... The pressure in a cylinder is given by P(t) = 101 + % where P is in kilopascals (WebAssign abbreviation kPa) and t is in minutes. Assume that t 2 1 and k is constant. At time t = 7.5 minutes the pressure is changing at 1.35 kPa/min. Find k. Your answer should be accurate to 1 decimal place and must include units. If you are not sure how to enter unusual combinations of units, click here. 10..-,2p....s, The electrical potential in a circuit is given by V(t) = 15 15e"'t where V is in volts, 1\" is in seconds, and k is constant. When 1\" = 0 the rate of change of potential is 6.9 volts/sec. Find the rate of change 3 seconds later, accurate to 2 decimal places. |:| Find k, accurate to 2 decimal places, with correct units. You may find it useful to know... FACT: The input to an exponential function must be dimensionless. I.e., it has no units