Answer the following problems:
1. During a hard sneeze, your eyes might shut for 0.50 s. If you are driving a car at 90 km/h during such a sneeze, how far does the car move during that time?
2. A car travels up a slope at a constant speed of 45 km/h for 20.0 min and returns down the slope to its place of origin at a constant speed of 65 km/h. What is the average speed for the total trip?
3. Two trains, each having a speed of 30 km/h, are headed at each other on the same straight track. A bird that can fly 60 km/h flies off the front of one train when they are 60 km apart and heads directly for the other train. On reaching the other train, the bird flies directly back to the first train. What is the total time and distance the bird travels for this entire flying trip?
Note: These problems are adapted from PRINCIPLES of PHYSICS, 9th Edition, International Student Version by Jearl Walker. John Wiley & Sons, Inc. Copyright 2011.
1. During a hard sneeze, your eyes might shut for 0.50 s. If you are driving a car at 90 km/h during such a sneeze, how far does the car move during that time?
2. A car travels up a slope at a constant speed of 45 km/h for 20.0 min and returns down the slope to its place of origin at a constant speed of 65 km/h. What is the average speed for the total trip?
3. Two trains, each having a speed of 30 km/h, are headed at each other on the same straight track. A bird that can fly 60 km/h flies off the front of one train when they are 60 km apart and heads directly for the other train. On reaching the other train, the bird flies directly back to the first train. What is the total time and distance the bird travels for this entire flying trip?
Note: These problems are adapted from PRINCIPLES of PHYSICS, 9th Edition, International Student Version by Jearl Walker. John Wiley & Sons, Inc. Copyright 2011.
