A car takes off from rest and covers a distance of 80m on a straight road in 10s. Calculate the magnitude of its acceleration
- A. 1.25ms-2
- B. 1.60ms-2
- C. 4.00ms-2
- D. 8.00ms-2
A man was moving round a circular path continuously for 4 minutes and covered the following distances in the times stated :
Distance (in metres) 200, 400, 600, 300
Time(in minutes) : 1, 2, 3, 4 respectively. Which of the following statements is correct about the motion of the man?
- A. the man was moving without uniform velocity
- B. the speed was changing constantly
- C. the velocity was uniform
- D. it was an instance of motion in which both speed and velocity are the same
The magnitude of the force required to make an object of mass, m move with speed, v in a circular of radius r is given by the expression
- A. \(\frac{mr}{v}\)
- B. \(\frac{mr^2}{v}\)
- C. \(\frac{mv^2}{r}\)
- D. \(\frac{mv}{r^2}\)
A boy travels 8 km eastward to a point B and then 6km northward to another point C. Determine the difference between the magnitude of displacement of the boy and distance travelled by him
- A. 2.0km
- B. 4.0km
- C. 10.0km
- D. 13.0km
One common characteristics of solids, liquids and gasses is that?
- A. all the three has fixed volume
- B. their molecule have the same size
- C. their molecules are always in motion
- D. all the three have the same inter molecular forces
A solid weight 45N and 15N respectively in air and water. Determine the relative density of the solid
- A. 0.33
- B. 0.50
- C. 1.50
- D. 3.00
A reservoir is filled with a liquid of density 2000kgm-3. Calculate the depth at which the pressure in the liquid will equal to 9100Nm-2 [g = 10ms-2]
- A. 0.262m
- B. 0.455m
- C. 0.664m
- D. 0.819m
The force between the molecules of a liquid in contact with that of a solid is
- A. adhesive
- B. cohesive
- C. magnetic
- D. repulsive