MYP IV Physics Practice: Skiing and Graphs

What does Newton's second law state about the net force acting on an object?

The net force acting on Hamza while skiing will cause his speed to decrease.

What is the displacement of Hamza in the first 5 seconds of his journey?

Hamza's acceleration at time t = 8.0 s is _____ m/s².

Match the following forces with their descriptions:

At what time did Hamza start traveling back down the embankment?

Hamza's speed increases at a constant rate when he is accelerating downhill.

What is the gradient formula used to determine acceleration from a velocity-time graph?

What is the primary purpose of the paperclip in the student's experiment?

The balloon must sink if the upthrust is less than its weight.

What instrument does the student use to measure the mass of the string, paperclip, and cardboard?

The mass of the house in the movie 'Up' is __________ kg.

If a single helium balloon provides an upthrust of 10 N, how much upthrust is required to lift the house in 'Up'?

The upward acceleration of the house indicates that the net force is zero.

Calculate the number of balloons required if each balloon provides an upthrust of 30 N and the total upthrust needed is 490 N.

What should be included in an explanation for each video related to forces?

Newton's laws of motion do not apply to animated characters in videos.

What is the research question for investigating the effect of drop height on a ball's velocity of impact?

What is the dependent variable in the experiment?

The initial velocity of the ball must be kept constant and equal to a non-zero value.

If the drop height of the ball increases, its velocity at impact will __________.

What kinematics equation is applied in this experiment to relate initial velocity, final velocity, acceleration, and distance covered?

Match the following terms with their definitions:

The ball is released from a height of ______ cm to investigate the effect on its velocity at impact.

In the context of dropping a ball, which factor does NOT affect the velocity of impact?

Acceleration is defined as the change in velocity over time.

Which of the following is a justification for keeping the initial velocity of the ball at zero?

Match the control variables with their justifications:

What impact does increasing drop height have on the velocity of a falling object?

What equipment is needed to measure the velocity of the ball at the bottom?

Safety precautions should include moving fragile objects away from the experiment area.

What is the independent variable in the investigation about the effect of mass on a spring's oscillation time period?

The hypothesis states that increasing the mass on a spring will decrease the time period of the oscillation.

What are the two relevant control variables when investigating the velocity of a ball at impact?

The density of sea water is _____ kg m-3.

Match the following variables with their classifications:

Which of the following statements best describes the relationship between mass and time period for a spring?

The Dead Sea is being threatened due to a rapid loss of water because it is fed by the River Jordan.

Discuss one advantage of pumping water from the Red Sea into the Dead Sea.