# physics

posted by .

A boy walks a total distance of 210 km due North. His starting position is at 20 km and his final position is 34 km. If it takes him 3 hours and 20 minutes to make his trip, what is his velocity? What is his speed?

• physics -

his velocity= change displacement/time=(34kmN-20kmN)/3 1/3 hrs

his speed= 210/ 3 1/3 km/hr

## Similar Questions

1. ### More Physics

The diagram below indicates three positions to which a woman travels. She starts at position A, travels 3.0 km to the west to point B, then 6.0 km to the north to point C. She then backtracks, and travels 2.0 km to the south to point …
2. ### Science

A boy walks a total distance of 210 km due North. His starting position is at 20 km and his final position is 34 km. If it takes him 3 hours and 20 minutes to make this trip, what is his total velocity?
3. ### Dynamics

A boy of mass m takes a running start and jumps on his sled at position 1. He leaves the ground at position 2 and lands in deep snow at a distance of b = 25 ft. How fast was he going at position 1?
4. ### Physics

A car travels 12 km West, 18 km South. What is the total car displacement?
5. ### Physics

An off-roader explores the open desert in her Hummer. First she drives 25 degrees west of north with a speed of 7.0 km/h for 15 minutes, then due east with a speed of 11 km/h for 7.5 minutes. She completes the final leg of her trip …
6. ### maths

a girl walks 4km due east and then 7km due north, how far is she away from her starting position?
7. ### Physics

Each crate moves from position 1, to position 2 to position 3. All of the crates are identical. the coordinate values given are in meters. Rank A through F in order from least to greatest, on the basis of the displacement from the …
8. ### Physics

Each crate moves from position 1, to position 2 to position 3. All of the crates are identical. the coordinate values given are in meters. Rank A through F in order from least to greatest, on the basis of the displacement from the …
9. ### Physics

Judy walks a certain distance due north, then walks twice as far due west. At the end of her trip, the straight-line distance from her starting point to her final position is 112m. a) What is the length of each leg of the trip?
10. ### Math

You are going hiking in Brown County State Park this weekend and want to plan your route to Lake Monroe. Starting from the parking lot, you plan on hiking 2300 m due west, 17500 m due south, 1900 m due east, and 1200 m due north. What …

More Similar Questions