Y7 Phy 6_3 BT Forces & Pressure Revision 5

What force brings the pencil down?

• Applied
• Magnetic
• Normal
• Gravitational

Object is at rest when

• .

• Magnetic force is zero

• speed is 100 m/s

• speed is zero

Contact forces are

• .

• two forces are in physical contact

• two forces are Not in contact

• two forces hug each other

What is the net force?

• 400 N Up
• 400 N Down
• - 400 N Down
• 800 N Down

What is the Weight?

• weight is an egg

• weight is a force

• weight is a book

• weight is my body

What is the Mass?

• mass is an egg

• mass is amount of matters

• Mass is a dream

• mass is nothing

Difference between the Mass and the weight?

• .

• weight changes, but mass is constant

• Mass ichanges, but weight is constant

• mass is bigger

  weight is smaller

Define pressure?

• area over weight

• Force over unit area

• mass over unit area

• area over mass

SI unit of pressure?

• newton

• pascal

• pasar

• pass

Who wins the tug of war with what net force?

• The person on the left with 20 N
• The person on the left with 80 N
• The people on the right with 20 N
• The people on the right with 100 N