4. Marlene, a 45.4kg girl is running at 3.5m/s on a pier from the shore towards a lake. At the edge of the pier she jumps onto a raft in the water. The raft was originally drifting towards the pier with a drift speed of v= -1m/s. What is the speed of Marlene and the raft if the mass of the raft is 112kg ?

What is the resultant vector of the following vectors? Write your answer as xy. Leave na spaces. Right and Up are positive.

ū u = (-4,-8) Find the magnitude of u. Enter an exact answer as an expression with a square root symbol or enter an approximate answer as a decimal rounded to the nearest hundredth. ||ū|| =

Choose one equation (and only one) from the equation sheet that would let you solve the problem posed. Then define which variables in the equation go with what numbers from the problem itself (not from other problems), and define which variable is being solved for. Do not actually solve the problem numerically or algebraically, just pick the one equation and define the relevant knowns and single unknown. Don’t forget to include direction when called for by a vector variable. 1) A single mole of Carbon Dioxide has a mass of 44 g, and at 1.00 atm of pressure and 20oC (293K) it occupies 22.4 liters. At what speed will you find the peak of its speed distribution function?

Evaluate the dot product A - Bif A = 2i +7j and B = 7i – 5j. ? A-B= Submit Request Answer Part B Evaluate the dot product A - Bif à = 2î – 7j and B = 5i +7j.

could you explain how to solve this?