IJSO

A girl walks to the east 40m, to the south 70m and then to the west 40m. What is the displacement of the girl?

• 40 m north

• 70 m north

• 40 m south

• 70 m south

A man walked 3 m toward east then 4 m toward south. What is the magnitude and direction of the total displacement of the man?

• 7 m to north - east

• 5 m to north - east

• 5 m to south - east

• 10 m to north - east

A driver in a car traveling at a speed of 20 m/s sees a cat 85 m away on the road. How long will it take for the car to a stop in exactly 80 m?

• 12 s

• 10 s

• 8s

• 8.5 s

An automobile with an initial speed of 40 m/s accelerates uniformly at the rate of 4m/s2. Find the final speed after 8 s.

• 40 m/s

• 60 m/s

• 70 m/s

• 72m/s

A car starts from rest and travels for 4.0 s with a constant acceleration of -0.5 m/s2. How far does the car travel in this time interval?

• 4m

• -4m

• 8m

• 16m

A car starts from rest with a constant acceleration of 6 m/s2. Find The velocity after 10 s.

• 30 m/s

• 40 m/s

• 50 m/s

• 60 m/s

Car moving with a velocity of 10 m/s accelerates for 5 s. it covers a distance of 100 m during this time interval. Find the velocity at the end of the distance.

• 40 m/s

• 60 m/s

• 80m/s

• 10 m/s

A car start from rest accelerates for 2 s. it covers a distance of 10 m. during this time interval. Find the acceleration.

• 5 m/s2

• 10 m/s2

• 20 m/s2

• 25 m/s2

A car starts from rest and accelerates at

4 m/s2 through a distance of 20m.

How fast is it they going?

• 12 m/s

• 9 m/s

• 11 m/s

• 7m/s

Which of the following quantities are vectors?

• Speed, velocity, acceleration

• Velocity, acceleration, force

• Force, acceleration, mass

• Length, mass, time