19. A salesperson drove north 224 km from Minnehaha to Yellville. He then turned around and drove back south for 249 km to Mount Carmel. The total trip took 5 hours What was the salesperson's average velocity for the entire trip?
"Round your answer to two decimal places if necessary
0 -0.69 km per hour
O 5 km per hour
0 5.72 km per hour
2.56 km per hour
O None of these is correct

The specific heat of silver is 0.057 calories/gram°c. if 10.0 grams of silver were heated and the temperature of the sample changed by 20.0°c, how many calories of heat energy were absorbed by the sample?

It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .

Hat is the most commonly cited cause of occupational injuries in the healthcare sector? a. repositioning of patients b. manual pipetting c. slips and trips d. workplace violence