Which motion that you can model as a point object and for what reasons?•    A semi moving on a freeway viewed from an airplane. •    A car accelerating from 0 to 60 mph. •    A bowling ball rolling to the pins. •    A hockey puck sliding on ice.

University Physics 1 - Motion in 2D & 3D (Projectile Motion)I need help with this problem and a very detailed explanation of the solutions described below:

Describe the motion of the object (direction of motion, sign and magnitude of velocity, acceleration) between the time interval indicated below using the object's Position vs Time graph: • Os and 2s • 2s and 5s • 5s and 6s • 6s and 12.5s • 12.5s and 14s • 14s and 16s • 16s and 18s • 18 and 19s 3 15 time t 20 -3 -4 -5 -7 position x 10

You toss a ball horizontally at 9 m/s about 1.2 m above the ground towards a dog who is sitting 3.5 m away. • What height will the dog’s mouth need to be at to catch the ball (if the dog only jumps vertically)?• How fast (and in what direction) will the ball be traveling when the dog catches it?• Include a sketch of the situation (with a coordinate system).

QUESTION 2 The easiest way to understand kinematics is by developing it on a 2D robotic arm that contains two links, two joints and one end-effector or a gripper. The first joint will rotate, but it is connected to a table or the floor by a foundation. While link 11 connects it to a second joint that can translate and rotate, a second link 12 links this joint to the fixed-end effector. The links have lengths 11 and 12 respectively with a 2D coordinated system assigned to the whole manipulator. The base or the first joint is coordinated at (0,0) while the gripper has coordinates (x,y). The link 11 connecting the first joint to the second is rotated by an angle a, followed by the rotation of the second link connecting the second joint and the gripper by angle B. Find the a and B, Joint Variables using inverse kinematics for the given 2-link manipulator. Let Length of the links 1₁ and 12 = 1 and (x y) = (1+√3, 1+√3₁ 2 2 fixed joint (0,0) O 1₁ a movable joint a = 60 or 30 and 3 = 30 or 30…

3. Sketch a graph of the position of an object that has an average velocity of • -5 mph for times between 0 and 3 hour and • 2 mph for times between 1 and 4 hours.

Please help me with that question

Physics sample problems about vectors. Thought I knew how to do them but keep getting wrong answers.

• We learned the set of 1D-Kinematic equations that describe the Uni- formly Accelerated Motion to be structured as "position as a function of time", "velocity as a function of time", and acceleration = constant. It is possible with some maths to make an equation WITHOUT time that re- lates jsut the distance traveled, the uniform acceleration and the speed at the beginning at the end. This equation is: 2 ad = v – vố (1) where a is the said acceleration, d is the distance, and vo and vf are the initial and the final speed respectively. For an alternative notation follow the link: 1D-Kinematics The point of this homework is not to learn a new equation, but to practice equation properties in a new format. • State the units on the LHS and the RHS. Do they match up? • As you see the person (me) throwing the stone how much is the FINAL velocity? Restate the equation (1) with that information mind: • If you did everything right then you end up with your RHS NEGATIVE (!). That means that the…

A)What is the height H of the cliff in m?  Part (b) What is the maximum height reached by the arrow along its trajectory in meters? •Part (c) What is the arrow's speed just before hitting the cliff in m/s?