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Given one form, as shown in Table 2 below, communicate the same results using the following other forms: (a) a description (b) a graph (c) a calculation The results of a motion experiment can be communicated in various forms. Describe how you would perform an experiment to calculate the required quantity. You are asked to calculate the speed of a jogger who runs beside you along a straight track. (a) Which result is the most reasonable for the density of a liquid determined by such an experiment? (b) Describe why the other three results are unacceptable in this case.ĩ. Table 1 gives the calculated densities from the four groups. Four groups of students perform an experiment to determine the density of a liquid taken from the same container.

Calculate the slope of the line and the area under the line on the graph in Figure 7. Compare the times of travel and average speeds of the three cars. The motions of three cars, L, M, and N, are illustrated by the graphs in Figure 6.

Determine the surface area of each shape. The scale used to draw the two geometric shapes in Figure 5 is 1.0 cm = 1.0 m. (c) Which of the forces you labelled in (b) is a non-contact force? Explain how you can tell. (b) Draw a sketch of the diving board with the diver on it, and label the following in your diagram: tension in the board, compression in the board, force of gravity on the diver, and force of the board acting on the diver. (a) Name all the forces on the diver at position A at position B. Which set of dots representing the flashing of light in Figure 3 would you observe in a photograph of the golf ball’s downward motion? Explain your choice.Ĥ. A “physics” golf ball, attached with a light that flashes regularly with time, is dropped in a dark room from shoulder height to the floor. (e) What is the dog’s average velocity for the entire trip? Aģ. (c) What is the net displacement of the dog over the entire path? (d) Calculate the dog’s average speed of motion.

(b) Determine the total distance travelled by the dog. (a) State the compass direction the dog is moving in during each part of the run. The total time the dog takes to go from A along the path back to A again is 16 s. The distance from A to B is 16 m, and the distance from B to C is 12 m. A playful dog runs along the path shown in Figure 2, starting at A and following through all arrows. Describe the motion of the car using your vocabulary of motion. The images are taken at time intervals of 1.0 s. Figure 1 shows the motion of a car along a straight road.

describe the contributions of Galileo and Newton to the understanding of dynamics evaluate and describe technological advances related to motion and identify the effects of societal influences on transportation and safety issuesĪre You Ready? Knowledge and Understanding 1.

investigate, through experimentation, the effect of a net force on the linear motion of an object, and analyze the effect in quantitative terms, using graphs, free-body diagrams, and vector diagrams.

demonstrate an understanding of the relationship between forces and the acceleration of an object in linear motion.

Overall Expectations In this unit, you will be able to You should develop your talent and go for it - get out and see as much as you can, learn as much as you can, Julie Payette, Canadian astronaut “Students who want to be astronauts should be driven to succeed. Ms Payette hopes that her involvement in space exploration inspires others. Using an ordinary screwdriver could cause a person to fly off in the opposite direction. Tools must be specially designed so they will not impart a force on the user. Forces affect the way that everything is done in space, from docking with other spacecraft to the design of tools. During the ten-day mission, Ms Payette had to account for the reduced force of gravity and its effect on force and motion. In 1999, she became a crew member of the space shuttle Discovery. When Julie Payette first watched the Apollo moon missions on television she knew she wanted to be an astronaut.