First, you need to learn some basic terms. You probably know about position, distance and time. Use the link to watch a video lesson and find out what displacement, velocity and acceleration are.
Видеоролик
Now, let’s solve some related problems.
1. Acceleration is crucial for racing. A racecar starts from rest and speeds up uniformly to the right until it reaches a maximum velocity of 60 m/s in 15 seconds.
What is the acceleration of the racecar?
Answer using a coordinate system where rightward is positive.
_____ m/s2
2. A teacher of physics living in New York usually goes to his favourite Japanese grocery store on Saturday. His route is shown on the map and follows these steps:
follow the Hudson River upriver 🡪 cross the river using the George Washington Bridge 🡪 reverse direction and head downriver
Work out the distance he walks and his actual displacement.
A Distance: ____ km
B Displacement: ____ km
3. To build an airport you need to calculate the length of the runway. An aeroplane accelerates down a runway at 3.20 m/s2 for 32.8 s until it finally lifts off the ground. Determine the distance travelled before takeoff:
____ m