SCA3_Effects of Force

Which is the correct relationship between W, m and g?

(W - weight in Newton, m - mass in kg, g - gravitational field strength in N/kg)

• W = m - g

• W = mg

• W = m/g

• W = m + g

The value of gravitational field strength on Earth is ______.

• 1.6 N/kg

• 10 N/kg

• 16 N/kg

• 100 N/kg

Farees has mass of 50 kg. What is his weight in Newton?

(DO NOT indicate unit in your answer)

A book has mass of 500 g. What is its weight in Newton?

(DO NOT indicate unit in your answer)

A car travels at 20 m/s.

What is the distance travelled in 100 s?

• 0.5 m

• 5 m

• 200 m

• 2000 m

A car travelled 20 km in 30 min.

What is its average speed in km/h?

• 0.67 km/h

• 1.5 km/h

• 40 km/h

• 60 km/h

What is the moment produced by the force and distance shown?

• 1 Nm clockwise

• 1 Nm anticlockwise

• 8 Nm clockwise

• 8 Nm anticlockwise

The see-saw shown is balanced.

What is the distance that the girl is seated from the pivot.

• 0.5 m

• 1.0 m

• 1.5 m

• 2.0 m

The object shown weighs 30 N and rests on the ground as shown.

What is the pressure exerted on the ground?

• 0.5 Pa

• 2 Pa

• 6 Pa

• 10 Pa

The object shown weighs 800 N.

The pressure it exerts on the ground is 100 Pa.

• True

• False