Dog Walker

m + 3.0 m = 7.0 m . The distance traveled is also 7.0 m. Δx 7.0 m = = 2.33 m/s . The average speed is also 2.33 m/s. Δt 3.0 s (b) For t = 2.0 s to 3.0 s, Δx = ( −3.0 m/s)(1.0 s) = −3.0 m . For the first 3.0 s, Δx = 4.0 m + (−3.0 m) = +1.0 m . The dog runs 4.0 m in the + x -direction and then 3.0 m in the − x -direction, so the distance traveled is still 7.0 m. Δx 1.0 m 7.00 m = = 0.33 m/s . The average speed is = 2.33 m/s . vav-x = Δt 3.0 s 3.00 s EVALUATE: When the motion is always in the same

m + 3.0 m = 7.0 m . The distance traveled is also 7.0 m. Δx 7.0 m = = 2.33 m/s . The average speed is also 2.33 m/s. Δt 3.0 s (b) For t = 2.0 s to 3.0 s, Δx = ( −3.0 m/s)(1.0 s) = −3.0 m . For the first 3.0 s, Δx = 4.0 m + (−3.0 m) = +1.0 m . The dog runs 4.0 m in the + x -direction and then 3.0 m in the − x -direction, so the distance traveled is still 7.0 m. Δx 1.0 m 7.00 m = = 0.33 m/s . The average speed is = 2.33 m/s . vav-x = Δt 3.0 s 3.00 s EVALUATE: When the motion is always in the same

m + 3.0 m = 7.0 m . The distance traveled is also 7.0 m. Δx 7.0 m = = 2.33 m/s . The average speed is also 2.33 m/s. Δt 3.0 s (b) For t = 2.0 s to 3.0 s, Δx = ( −3.0 m/s)(1.0 s) = −3.0 m . For the first 3.0 s, Δx = 4.0 m + (−3.0 m) = +1.0 m . The dog runs 4.0 m in the + x -direction and then 3.0 m in the − x -direction, so the distance traveled is still 7.0 m. Δx 1.0 m 7.00 m = = 0.33 m/s . The average speed is = 2.33 m/s . vav-x = Δt 3.0 s 3.00 s EVALUATE: When the motion is always in the same

m + 3.0 m = 7.0 m . The distance traveled is also 7.0 m. Δx 7.0 m = = 2.33 m/s . The average speed is also 2.33 m/s. Δt 3.0 s (b) For t = 2.0 s to 3.0 s, Δx = ( −3.0 m/s)(1.0 s) = −3.0 m . For the first 3.0 s, Δx = 4.0 m + (−3.0 m) = +1.0 m . The dog runs 4.0 m in the + x -direction and then 3.0 m in the − x -direction, so the distance traveled is still 7.0 m. Δx 1.0 m 7.00 m = = 0.33 m/s . The average speed is = 2.33 m/s . vav-x = Δt 3.0 s 3.00 s EVALUATE: When the motion is always in the same

m + 3.0 m = 7.0 m . The distance traveled is also 7.0 m. Δx 7.0 m = = 2.33 m/s . The average speed is also 2.33 m/s. Δt 3.0 s (b) For t = 2.0 s to 3.0 s, Δx = ( −3.0 m/s)(1.0 s) = −3.0 m . For the first 3.0 s, Δx = 4.0 m + (−3.0 m) = +1.0 m . The dog runs 4.0 m in the + x -direction and then 3.0 m in the − x -direction, so the distance traveled is still 7.0 m. Δx 1.0 m 7.00 m = = 0.33 m/s . The average speed is = 2.33 m/s . vav-x = Δt 3.0 s 3.00 s EVALUATE: When the motion is always in the same

m + 3.0 m = 7.0 m . The distance traveled is also 7.0 m. Δx 7.0 m = = 2.33 m/s . The average speed is also 2.33 m/s. Δt 3.0 s (b) For t = 2.0 s to 3.0 s, Δx = ( −3.0 m/s)(1.0 s) = −3.0 m . For the first 3.0 s, Δx = 4.0 m + (−3.0 m) = +1.0 m . The dog runs 4.0 m in the + x -direction and then 3.0 m in the − x -direction, so the distance traveled is still 7.0 m. Δx 1.0 m 7.00 m = = 0.33 m/s . The average speed is = 2.33 m/s . vav-x = Δt 3.0 s 3.00 s EVALUATE: When the motion is always in the same

3.0 m = 7.0 m . The distance traveled is also 7.0 m. Δx 7.0 m = = 2.33 m/s . The average speed is also 2.33 m/s. Δt 3.0 s (b) For t = 2.0 s to 3.0 s, Δx = ( −3.0 m/s)(1.0 s) = −3.0 m . For the first 3.0 s, Δx = 4.0 m + (−3.0 m) = +1.0 m . The dog runs 4.0 m in the + x -direction and then 3.0 m in the − x -direction, so the distance traveled is still 7.0 m. Δx 1.0 m 7.00 m = = 0.33 m/s . The average speed is = 2.33 m/s . vav-x = Δt 3.0 s 3.00 s EVALUATE: When the motion is…