I need help with this please: 23

Use the GRASP technique wherever possible.

1. Write a question that requires solving for both speed and velocity, but the speed and velocity must have different magnitudes. Solve the question.
2. A dog runs toward a fire hydrant, stops to sniff it, and then continues running at a new velocity in the same direction.

• Draw the position-time graph of this motion. Be sure to include scales for position and time (you can choose values for these).
• From the graph, determine the velocity during thefastestpart of the motion.
• Draw thevelocity-timegraph of the identical motion.

1. A cyclist travelling across Ontario increases her velocity as she goes downhill coming into Thunder Bay. Choose her velocity at the top of the hill (between 5 m/s [forward] and 9 m/s [forward]), and her velocity at the bottom of the hill (between 15 m/s [forward] and 21 m/s [forward]). If she goes from the top to the bottom in 30 seconds, what is her acceleration?
2. Describe each of Newton's three laws of motion, using an example that you have observed during your day today.
3. Write a question that involves drawing a free-body diagram of an object with at least four different forces acting on it. Assign values to your forces (i.e.). Draw the free-body diagram, and solve for net force in the horizontal direction and for net force in the vertical direction.
4. A catapult launches a pumpkin toward a target. Choose a mass for your pumpkin (between 5 kg and 35 kg), and a value of acceleration (between 10 m/[forward] and 25 m/[forward]), then solve for the net force of the catapult.
5. A friend is trying to push you across a frozen puddle. The coefficient of kinetic friction between rubber (the soles of your shoes) and ice is 0.15.

• Determine your weight (hint: you will need to know your mass. One pound is equal to 0.45 kg).
• Determine the force of friction acting on your shoes.
• Assuming the only forces in the horizontal direction are the force of friction and the applied force of your friend pushing you, if the net force is 10 N [forward], with what force is your friend pushing?
• What is your acceleration?