A solid rectangular block of iron is kept over the top of a table with its different faces touching the table. In different cases, the solid block exerts

• different forces and different pressures

• different forces but same pressure

• same force and same pressure

• same force but different pressures

112.

The odometer reading of a moving car at 8:00 am is 36540 km and at 10:00 am is 36666 km. If the car is moving on a zigzag path with variable speeds, its average speed (in m/s) is

• 17.5

• 35

• 6.3

• 12.6