Vectors - Basics Level 2 Physics

Which statement states what a vector is?

• It has a size but no direction

• It has a direction but no size

• It has both a size and a direction.

The Vector V is made by using Pythagoras to . . .

• Taking V_y away from V_x

• Taking Vx away from Vy

• Adding V_{y to V}

• Adding V_{y to} V_x

When vectors are added together. .

• Using Pythagoras you add the arrows by the bottom of one pointing to the top. . to the next one in line ie the bottom of the next one which is pointing to the top. . . .

• Using Pythagoras you add the arrows by the bottom of one to the next one in line ie the top of the next one.

• Using Pythagoras you add the arrows by the top of one to the next one in line ie the bottom of the next one.

What is the horizontal component of this vector diagram?

• 67.2 N

• 130 N

• 7.6 N

• 23.64 N

The mass of the bag is 35 kg and the angle of the bag to the vertical is 30 ^o. Calculate the weight force acting vertically downwards.

• 300 N

• 343 N

• 1298 N

• 3430 N

The mass of the bag is changed to 40 kg and the angle of the bag to the vertical is 30 ^o. If the weight force of the bag is 392 N, calculate the tension force in the rope which the bag hangs from.

• 300 N

• 339.48 N

• 196 N

• 226.32 N

Before the ice skater is going East at 10 m/s, after she goes West at 6 m/s. What is her change in velocity? Match the correct vector diagram to the correct calculation. Do them yourself!

• 
• 11.66 m/s

• 
• 4 m/s

• 14 m/s

The 500 kg car is on a hill at a 12⁰ angle. Calculate the friction force component of the weight force.

• 4900 N

• 4792.92 N

• 1041.53 N

• 1018.77 N

Jason (75 kg) slides down the slide at a constant speed. The reaction force is 450 N and the friction force is 34 N. What is the size of the net force acting on Jason?

• 735 N

• 450 N

• 34 N

• 0 N

Jarad (65 kg) slides down the slide at a constant speed. The angle of the slide to the horizontal is 35 degrees. Calculate the reaction force of the slide on Jason.

• 521.8 N

• 365.37 N

• 446.03 N

• 0 N