Which set of physical quantities consists only of scalar quantities?
An object moving in a positive direction experiences an acceleration of +2,0 m.s-2. This means the object
If the acceleration of an object is zero, then that object cannot be moving
The motions of a car and a truck along a straight road are represented by the velocity-time graphs in the figure. The two vehicles are initially alongside each other at time t = 0. At time T, what is true of the distances traveled by the vehicles?
A bus is travelling south at 20 m.s-1 when the driver sees a child run in front of the bus. The bus driver applies the brakes and the bus stops in time. Which is the best description of the velocity and acceleration of the bus after the brakes are applied?
north | south | |
|---|---|---|
Velocity | ||
Acceleration |
The velocity vs time graph for the motion of a car on a straight road is shown in the graph. Assume that the car starts at the origin 𝓍 = 0 at time t = 0.
The car's initial velocity is east.
At 10 s is the car's position east or west from its starting point?
Marco wants to buy the used sports car with the greatest acceleration.
Car A can go from 0 m.s-1 to 18,9m.s-1 in 4,00 s.
Car B can accelerate from 0 m.s-1 to 22,4 m.s-1 in 3,50 s.
Car C can go from 0 to 26,8 m.s-1 in 6,00 s.
Rank the three cars from greatest acceleration to least.
Car A
Car C
Car B
What quantity is the rate of change of velocity?
Which swimmer swam the furtherest?
A bus travels a distance of 120 km with a speed of 40 km.h-1 and then another 60 km with a speed of 30 km.h-1. Calculate the average speed for the entire journey.
Which of the following is moving faster?
During which time interval(s) is the car speeding up? Select all that may apply.
