Use the kinematic equation of motion to solve the
problem.
100 Imagine you are riding your bike down St. Mary street at 7 ft/s, and you...
You are riding your bike down a hill and begin accelerating. How many different components of acceleration is a point on the edge of your tire experiencing?
two Question please
You are riding your bike down a hill and begin accelerating. How many different components of acceleration is a point on the edge of your tire experiencing? 問題2 5 In some cases both the instantaneous center of zero velocity and instantaneous center of zero acceleration methods may be used to solve problems more easily O True O False
At the instant shown the 100-lb block A is moving down the plane at 7 ft/s while being attached to the 50-lb block B. The coefficient of kinetic friction between the block and the incline is μk = 0.25. Neglect the mass of the pulleys and cables. (Figure 1) Determine the acceleration of A before it stops. Express your answer to three significant figures and include the appropriate units. Determine the distance A slides before it stops. Express your answer...
Imagine that you turn on the lamp in your room that contains an incandescent light bulb and that you stand 1m from the light. Suppose further that your bulb is rated at 100 W. What is the intensity of the light that passes out through this sphere at this distance of say 1m? Now compare this to a milliwatt laser at the same distance away. How many times more/less intense is the laser beam to your eye compared to the...
You get on your bicycle and ride it with a constant acceleration of 0.5 m/s2 for 20s. After that, you continue riding at a constant velocity for a distance of 200 m. Finally, you slow to a stop, with a constant acceleration over a distance of 20 m 350 300 250 x (m) 200 150 100 50 10 30 t (s) 10 v (m/s) 10 10 a (m/s2) (a) How far did you travel while you were accelerating at 0.5...
Randall is driving down a long steep hill (18°) at a steady
12.4 m/s?
A. What is his velocity after 5.7 second of driving?
B. What is his velocity in the x and y directions?
C. How far up the hill does he drive in 5.7 seconds?
D. What is his vertical displacement in those 5.7
seconds?
For each question be sure to do the Prepare step: visual representation with variables and axes, collect known values, identify unknown quantities. 1....
Your friend is about to drive away after moving out and you notice that they left behind their basketball, so you decide to throw it at a 45 degree from the horizontal towards the truck. If the truck is 7.3 m away from you, at what speed must you throw the ball for it to make it into the truck? Assume you launch the ball at the same height as the truck bed. Report the value in m/s rounded to...
So
I know there is 4 different equationsfor kinematics. Can you pick
the problems that use each one and write out how you do it?
Especially 6 and 10 because those seem very hard.
1-D Kinematics Practice PHYS&114 Name: 1. A car starting from rest travels 231 m with a constant acceleration of 1.05 3. What is its 2. How far does a train travel while its velocity changes from +102 to +45.0 등 in 22.0 seconds? 3. You sprint...
7. The nearest star is 4.1 x 1016 m away. Suppose you had a spaceship that could accelerate from rest at 10 m/s? for half a year, then continues at constant speed. How long would it take to reach the nearest star? Use 1 year 365 days, 24 hours -1 day, 60 minutes 1 hour, 60 seconds 1 minute. も. 15768111 vA: at 2 1.24 16 15 구 68 oooo 8. A roofer on the ground throws a hammer to...
You are driving to the grocery store at 25 m/s . You are 110 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.70 s and that your car brakes with constant acceleration. -How far are you from the intersection when you begin to apply the brakes? -What acceleration will bring you to rest right at the intersection? -How long does it take you to stop? A rock is tossed straight up with...