1. A tractor pulls a wagon of school children from a farmhouse to a corn field. It travels at a speed of 19.5 km/h for 5.0 minutes. How far is it between the farmhouse and the corn field? (/1) 2. A skater skates west 60.0 m across a frozen river and realizes she has dropped her scarf. She skates back east 30.0 m to pick up her scarf, then 30.0 m west back to the other side. If she skates for 8.0 minutes, what is the skater's average velocity? What is her average speed? (/1) 3. A child drops a ball onto the road 28 m in front of a car travelling at 50.0 km/h. If the car can decelerate at a rate of 3.50 m/s , will it stop before hitting the ball? (/2)