40 points. please help ASAP. will give brainliest
Displacement vectors of 3 m and 5 m in the same direction combine to make a displacement vector that is
2m
0m
8m
15m
Average speed is the total distance divided by the
average distance
average acceleration
total time
slope
The rate at which volocity is changing at a given instant is described by
instantaneous acceleration
average speed
constant speed
vector addition
A train approaching a crossing changes speed from 25 m/s to 10 m/s in 240 seconds. How can the train's acceleration be described?
The train's acceleratipon is positive
The train is not accelerating
The train will come to rest in 6 minutes
The train's acceleration in negative
When a pair of balanced forces acts on an object, the net force that results is
greater in size than both forces combined
greater in size than one of the forces
equal in size to one of the forces
equal to zero
